From 78a312f61c27b1819c7c551c55eecaaad0ee7f8d Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Wed, 21 May 2014 16:07:19 -0700
Subject: [PATCH] Rebuild dist.

---
 dist/lodash.compat.js         | 746 +++++++++++++++++++--------------
 dist/lodash.compat.min.js     | 130 +++---
 dist/lodash.js                | 748 ++++++++++++++++++++--------------
 dist/lodash.min.js            | 123 +++---
 dist/lodash.underscore.js     | 302 +++++++++-----
 dist/lodash.underscore.min.js |  72 ++--
 6 files changed, 1257 insertions(+), 864 deletions(-)

diff --git a/dist/lodash.compat.js b/dist/lodash.compat.js
index 61e4bfe99..77e17cb8c 100644
--- a/dist/lodash.compat.js
+++ b/dist/lodash.compat.js
@@ -85,7 +85,7 @@
   var reUnescapedString = /['\n\r\u2028\u2029\\]/g;
 
   /** Used to match words to create compound words */
-  var reWords = /[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[a-z]+|[0-9]+/g;
+  var reWords = /[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g;
 
   /** Used to detect and test whitespace */
   var whitespace = (
@@ -112,7 +112,7 @@
     'toLocaleString', 'toString', 'valueOf'
   ];
 
-  /** Used to make template `sourceURL`s easier to identify */
+  /** Used to make template sourceURLs easier to identify */
   var templateCounter = 0;
 
   /** `Object#toString` result shortcuts */
@@ -238,24 +238,12 @@
   /*--------------------------------------------------------------------------*/
 
   /**
-   * Used by `_.defaults` to customize its `_.assign` use.
-   *
-   * @private
-   * @param {*} objectValue The destination object property value.
-   * @param {*} sourceValue The source object property value.
-   * @returns {*} Returns the value to assign to the destination object.
-   */
-  function assignDefaults(objectValue, sourceValue) {
-    return typeof objectValue == 'undefined' ? sourceValue : objectValue;
-  }
-
-  /**
-   * The base implementation of `_.at` without support for strings or individual
-   * key arguments.
+   * The base implementation of `_.at` without support for strings and
+   * individual key arguments.
    *
    * @private
    * @param {Array|Object} collection The collection to iterate over.
-   * @param {number[]|string[]} [keys] The keys of elements to pick.
+   * @param {number[]|string[]} [props] The keys of elements to pick.
    * @returns {Array} Returns the new array of picked elements.
    */
   function baseAt(collection, props) {
@@ -552,6 +540,21 @@
    * @category Utilities
    * @param {Object} [context=root] The context object.
    * @returns {Function} Returns a new `lodash` function.
+   * @example
+   *
+   * var lodash = _.runInContext();
+   *
+   * lodash.mixin({
+   *   'exists': function(value) {
+   *     return value != null;
+   *   }
+   * }, false);
+   *
+   * _.isFunction(lodash.exists);
+   * // => true
+   *
+   * _.isFunction(_.exists);
+   * // => false
    */
   function runInContext(context) {
     // Avoid issues with some ES3 environments that attempt to use values, named
@@ -574,7 +577,7 @@
         TypeError = context.TypeError;
 
     /** Used for native method references */
-    var arrayRef = Array.prototype,
+    var arrayProto = Array.prototype,
         errorProto = Error.prototype,
         objectProto = Object.prototype,
         stringProto = String.prototype;
@@ -608,12 +611,12 @@
         fnToString = Function.prototype.toString,
         getPrototypeOf = isNative(getPrototypeOf = Object.getPrototypeOf) && getPrototypeOf,
         hasOwnProperty = objectProto.hasOwnProperty,
-        push = arrayRef.push,
+        push = arrayProto.push,
         propertyIsEnumerable = objectProto.propertyIsEnumerable,
         Set = isNative(Set = context.Set) && Set,
         setTimeout = context.setTimeout,
-        splice = arrayRef.splice,
-        unshift = arrayRef.unshift;
+        splice = arrayProto.splice,
+        unshift = arrayProto.unshift;
 
     /** Used to set metadata on functions */
     var defineProperty = (function() {
@@ -1064,6 +1067,62 @@
       return result;
     }
 
+    /**
+     * Used by `_.defaults` to customize its `_.assign` use.
+     *
+     * @private
+     * @param {*} objectValue The destination object property value.
+     * @param {*} sourceValue The source object property value.
+     * @returns {*} Returns the value to assign to the destination object.
+     */
+    function assignDefaults(objectValue, sourceValue) {
+      return typeof objectValue == 'undefined' ? sourceValue : objectValue;
+    }
+
+    /**
+     * Used by `_.template` to customize its `_.assign` use.
+     *
+     * Note: This method is like `assignDefaults` except that it ignores
+     * inherited property values when checking if a property is `undefined`.
+     *
+     * @private
+     * @param {*} objectValue The destination object property value.
+     * @param {*} sourceValue The source object property value.
+     * @param {string} key The key associated with the object and source values.
+     * @param {Object} object The destination object.
+     * @returns {*} Returns the value to assign to the destination object.
+     */
+    function assignOwnDefaults(objectValue, sourceValue, key, object) {
+      return (!hasOwnProperty.call(object, key) || typeof objectValue == 'undefined')
+        ? sourceValue
+        : objectValue
+    }
+
+    /**
+     * The base implementation of `_.assign` without support for argument juggling,
+     * multiple sources, and `this` binding.
+     *
+     * @private
+     * @param {Object} object The destination object.
+     * @param {Object} source The source object.
+     * @param {Function} [callback] The function to customize assigning values.
+     * @returns {Object} Returns the destination object.
+     */
+    function baseAssign(object, source, callback) {
+      if (!object) {
+        return object;
+      }
+      var index = -1,
+          props = keys(source),
+          length = props.length;
+
+      while (++index < length) {
+        var key = props[index];
+        object[key] = callback ? callback(object[key], source[key], key, object, source) : source[key];
+      }
+      return object;
+    }
+
     /**
      * The base implementation of `_.bind` that creates the bound function and
      * sets its metadata.
@@ -1084,12 +1143,11 @@
         if (partialArgs) {
           // avoid `arguments` object use disqualifying optimizations by
           // converting it to an array before passing it to `composeArgs`
-          var index = -1,
-              length = arguments.length,
+          var length = arguments.length,
               args = Array(length);
 
-          while (++index < length) {
-            args[index] = arguments[index];
+          while (length--) {
+            args[length] = arguments[length];
           }
           args = composeArgs(partialArgs, partialHolders, args);
         }
@@ -1109,8 +1167,8 @@
     }
 
     /**
-     * The base implementation of `_.clone` without argument juggling or support
-     * for `this` binding.
+     * The base implementation of `_.clone` without support for argument juggling
+     * and `this` binding.
      *
      * @private
      * @param {*} value The value to clone.
@@ -1121,11 +1179,9 @@
      * @returns {*} Returns the cloned value.
      */
     function baseClone(value, isDeep, callback, stackA, stackB) {
-      if (callback) {
-        var result = callback(value);
-        if (typeof result != 'undefined') {
-          return result;
-        }
+      var result = callback ? callback(value) : undefined;
+      if (typeof result != 'undefined') {
+        return result;
       }
       var isObj = isObject(value);
       if (isObj) {
@@ -1166,7 +1222,7 @@
         result = isArr ? ctor(value.length) : {};
       }
       else {
-        result = isArr ? slice(value) : assign({}, value);
+        result = isArr ? slice(value) : baseAssign({}, value);
       }
       // add array properties assigned by `RegExp#exec`
       if (isArr) {
@@ -1188,7 +1244,10 @@
 
       // recursively populate clone (susceptible to call stack limits)
       (isArr ? arrayEach : baseForOwn)(value, function(valValue, key) {
-        result[key] = baseClone(valValue, isDeep, callback, stackA, stackB);
+        var valClone = callback ? callback(valValue, key) : undefined;
+        result[key] = typeof valClone == 'undefined'
+          ? baseClone(valValue, isDeep, null, stackA, stackB)
+          : valClone;
       });
 
       return result;
@@ -1222,7 +1281,7 @@
 
     /**
      * The base implementation of `_.createCallback` without support for creating
-     * "_.pluck" or "_.where" style callbacks.
+     * "_.pluck" and "_.where" style callbacks.
      *
      * @private
      * @param {*} [func=identity] The value to convert to a callback.
@@ -1302,11 +1361,11 @@
           key = func;
 
       function bound() {
-        var index = -1,
-            length = arguments.length,
+        var length = arguments.length,
+            index = length,
             args = Array(length);
 
-        while (++index < length) {
+        while (index--) {
           args[index] = arguments[index];
         }
         if (partialArgs) {
@@ -1392,7 +1451,7 @@
 
     /**
      * The base implementation of `_.forEach` without support for callback
-     * shorthands or `this` binding.
+     * shorthands and `this` binding.
      *
      * @private
      * @param {Array|Object|string} collection The collection to iterate over.
@@ -1421,7 +1480,7 @@
 
     /**
      * The base implementation of `_.forEachRight` without support for callback
-     * shorthands or `this` binding.
+     * shorthands and `this` binding.
      *
      * @private
      * @param {Array|Object|string} collection The collection to iterate over.
@@ -1448,8 +1507,8 @@
     }
 
     /**
-     * The base implementation of `_.find`, `_.findLast`, `_.findKey`, and `_.findLastKey`
-     * without support for callback shorthands or `this` binding which iterates
+     * The base implementation of `_.find`, `_.findLast`, `_.findKey`, and `_.findLastKey`,
+     * without support for callback shorthands and `this` binding, which iterates
      * over `collection` using the provided `eachFunc`.
      *
      * @private
@@ -1474,7 +1533,7 @@
 
     /**
      * The base implementation of `_.flatten` without support for callback
-     * shorthands or `this` binding.
+     * shorthands and `this` binding.
      *
      * @private
      * @param {Array} array The array to flatten.
@@ -1563,7 +1622,7 @@
 
     /**
      * The base implementation of `_.forIn` without support for callback
-     * shorthands or `this` binding.
+     * shorthands and `this` binding.
      *
      * @private
      * @param {Object} object The object to iterate over.
@@ -1576,7 +1635,7 @@
 
     /**
      * The base implementation of `_.forOwn` without support for callback
-     * shorthands or `this` binding.
+     * shorthands and `this` binding.
      *
      * @private
      * @param {Object} object The object to iterate over.
@@ -1589,7 +1648,7 @@
 
     /**
      * The base implementation of `_.forOwnRight` without support for callback
-     * shorthands or `this` binding.
+     * shorthands and `this` binding.
      *
      * @private
      * @param {Object} object The object to iterate over.
@@ -1626,7 +1685,7 @@
 
     /**
      * The base implementation of `_.isEqual`, without support for `thisArg`
-     * binding, that allows partial "_.where" style comparisons.
+     * binding, which allows partial "_.where" style comparisons.
      *
      * @private
      * @param {*} value The value to compare to `other`.
@@ -1638,11 +1697,9 @@
      * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
      */
     function baseIsEqual(value, other, callback, isWhere, stackA, stackB) {
-      if (callback) {
-        var result = callback(value, other);
-        if (typeof result != 'undefined') {
-          return !!result;
-        }
+      var result = callback && !stackA ? callback(value, other) : undefined;
+      if (typeof result != 'undefined') {
+        return !!result;
       }
       // exit early for identical values
       if (value === other) {
@@ -1740,7 +1797,6 @@
           return stackB[length] == other;
         }
       }
-      var size = 0;
       result = true;
 
       // add `value` and `other` to the stack of traversed objects
@@ -1750,40 +1806,57 @@
       // recursively compare objects and arrays (susceptible to call stack limits)
       if (isArr) {
         // compare lengths to determine if a deep comparison is necessary
+        var othLength = other.length;
         length = value.length;
-        size = other.length;
-        result = size == length;
+        result = othLength == length;
 
         if (result || isWhere) {
+          var othIndex = -1;
+
           // deep compare the contents, ignoring non-numeric properties
-          while (size--) {
-            var index = length,
-                othValue = other[size];
+          while (++othIndex < othLength) {
+            var othValue = other[othIndex];
 
             if (isWhere) {
-              while (index--) {
-                if ((result = baseIsEqual(value[index], othValue, callback, isWhere, stackA, stackB))) {
+              var index = -1;
+              while (++index < length) {
+                result = baseIsEqual(value[index], othValue, callback, isWhere, stackA, stackB);
+                if (result) {
                   break;
                 }
               }
-              if (!result) {
-                break;
-              }
-            } else if (!(result = baseIsEqual(value[size], othValue, callback, isWhere, stackA, stackB))) {
+            } else {
+              var valValue = value[othIndex];
+              result = callback ? callback(valValue, othValue, othIndex) : undefined;
+              result = typeof result == 'undefined'
+                ? baseIsEqual(valValue, othValue, callback, isWhere, stackA, stackB)
+                : !!result;
+            }
+            if (!result) {
               break;
             }
           }
         }
       }
       else {
+        var size = 0;
+
         // deep compare objects using `forIn`, instead of `forOwn`, to avoid `Object.keys`
         // which, in this case, is more costly
         baseForIn(other, function(othValue, key, other) {
           if (hasOwnProperty.call(other, key)) {
-            // count the number of properties.
+            result = false;
+            // count the number of properties
             size++;
-            // deep compare each property value.
-            return (result = hasOwnProperty.call(value, key) && baseIsEqual(value[key], othValue, callback, isWhere, stackA, stackB));
+            // deep compare each property value
+            if (hasOwnProperty.call(value, key)) {
+              var valValue = value[key];
+              result = callback ? callback(valValue, othValue, key) : undefined;
+              result = typeof result == 'undefined'
+                ? baseIsEqual(valValue, othValue, callback, isWhere, stackA, stackB)
+                : !!result;
+            }
+            return result;
           }
         });
 
@@ -1792,7 +1865,8 @@
           baseForIn(value, function(valValue, key, value) {
             if (hasOwnProperty.call(value, key)) {
               // `size` will be `-1` if `value` has more properties than `other`
-              return (result = --size > -1);
+              result = --size > -1;
+              return result;
             }
           });
         }
@@ -1804,8 +1878,32 @@
     }
 
     /**
-     * The base implementation of `_.merge` without argument juggling or support
-     * for `this` binding.
+     * The base implementation of `_.invoke` which requires additional arguments
+     * be provided as an array of arguments rather than individually.
+     *
+     * @private
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|string} methodName The name of the method to invoke or
+     *  the function invoked per iteration.
+     * @param {Array} [args] The arguments to invoke the method with.
+     * @returns {Array} Returns the array of results.
+     */
+    function baseInvoke(collection, methodName, args) {
+      var index = -1,
+          isFunc = typeof methodName == 'function',
+          length = collection && collection.length,
+          result = Array(length < 0 ? 0 : length >>> 0);
+
+      baseEach(collection, function(value) {
+        var func = isFunc ? methodName : (value != null && value[methodName]);
+        result[++index] = func ? func.apply(value, args) : undefined;
+      });
+      return result;
+    }
+
+    /**
+     * The base implementation of `_.merge` without support for argument juggling,
+     * multiple sources, and `this` binding.
      *
      * @private
      * @param {Object} object The destination object.
@@ -1813,64 +1911,124 @@
      * @param {Function} [callback] The function to customize merging properties.
      * @param {Array} [stackA=[]] Tracks traversed source objects.
      * @param {Array} [stackB=[]] Associates values with source counterparts.
+     * @returns {Object} Returns the destination object.
      */
     function baseMerge(object, source, callback, stackA, stackB) {
-      (isArray(source) ? arrayEach : baseForOwn)(source, function(source, key) {
-        var found,
-            isArr,
-            result = source,
+      if (!object) {
+        return object;
+      }
+      (isArray(source) ? arrayEach : baseForOwn)(source, function(srcValue, key, source) {
+        var isArr = srcValue && isArray(srcValue),
+            isObj = srcValue && isPlainObject(srcValue),
             value = object[key];
 
-        if (source && ((isArr = isArray(source)) || isPlainObject(source))) {
-          // avoid merging previously merged cyclic sources
-          var stackLength = stackA.length;
-          while (stackLength--) {
-            if ((found = stackA[stackLength] == source)) {
-              value = stackB[stackLength];
-              break;
-            }
-          }
-          if (!found) {
-            var isShallow;
-            if (callback) {
-              result = callback(value, source);
-              if ((isShallow = typeof result != 'undefined')) {
-                value = result;
-              }
-            }
-            if (!isShallow) {
-              value = isArr
-                ? (isArray(value) ? value : [])
-                : (isPlainObject(value) ? value : {});
-            }
-            // add `source` and associated `value` to the stack of traversed objects
-            stackA.push(source);
-            stackB.push(value);
-
-            // recursively merge objects and arrays (susceptible to call stack limits)
-            if (!isShallow) {
-              baseMerge(value, source, callback, stackA, stackB);
-            }
-          }
-        }
-        else {
-          if (callback) {
-            result = callback(value, source);
-            if (typeof result == 'undefined') {
-              result = source;
-            }
+        if (!(isArr || isObj)) {
+          result = callback ? callback(value, srcValue, key, object, source) : undefined;
+          if (typeof result == 'undefined') {
+            result = srcValue;
           }
           if (typeof result != 'undefined') {
             value = result;
           }
+          object[key] = value;
+          return;
+        }
+        // avoid merging previously merged cyclic sources
+        stackA || (stackA = []);
+        stackB || (stackB = []);
+
+        var length = stackA.length;
+        while (length--) {
+          if (stackA[length] == srcValue) {
+            object[key] = stackB[length];
+            return;
+          }
+        }
+        var result = callback ? callback(value, srcValue, key, object, source) : undefined,
+            isShallow = typeof result != 'undefined';
+
+        if (isShallow) {
+          value = result;
+        } else {
+          value = isArr
+            ? (isArray(value) ? value : [])
+            : (isPlainObject(value) ? value : {});
+        }
+        // add `source` and associated `value` to the stack of traversed objects
+        stackA.push(srcValue);
+        stackB.push(value);
+
+        // recursively merge objects and arrays (susceptible to call stack limits)
+        if (!isShallow) {
+          baseMerge(value, srcValue, callback, stackA, stackB);
         }
         object[key] = value;
       });
+
+      return object;
     }
 
     /**
-     * The base implementation of `_.random` without argument juggling or support
-     * for returning floating-point numbers.
+     * The base implementation of `_.pick` without support for `this` binding
+     * and individual property name arguments.
+     *
+     * @private
+     * @param {Object} object The source object.
+     * @param {Function|string[]} predicate The function called per iteration or
+     *  property names to pick.
+     * @returns {Object} Returns the new object.
+     */
+    function basePick(object, predicate) {
+      var result = {};
+
+      if (typeof predicate == 'function') {
+        baseForIn(object, function(value, key, object) {
+          if (predicate(value, key, object)) {
+            result[key] = value;
+          }
+        });
+        return result;
+      }
+      var index = -1,
+          props = predicate,
+          length = props.length;
+
+      while (++index < length) {
+        var key = props[index];
+        if (key in object) {
+          result[key] = object[key];
+        }
+      }
+      return result;
+    }
+
+    /**
+     * The base implementation of `_.pullAt` without support for individual
+     * index arguments.
+     *
+     * @private
+     * @param {Array} array The array to modify.
+     * @param {number[]} indexes The indexes of elements to remove.
+     * @returns {Array} Returns the new array of removed elements.
+     */
+    function basePullAt(array, indexes) {
+      var length = indexes.length,
+          result = baseAt(array, indexes);
+
+      indexes.sort(baseCompareAscending);
+      while (length--) {
+        var index = parseFloat(indexes[length]);
+        if (index != previous && index > -1 && index % 1 == 0) {
+          var previous = index;
+          splice.call(array, index, 1);
+        }
+      }
+      return result;
+    }
+
+    /**
+     * The base implementation of `_.random` without support for argument juggling
+     * and returning floating-point numbers.
      *
      * @private
      * @param {number} min The minimum possible value.
@@ -1883,7 +2041,7 @@
 
     /**
      * The base implementation of `_.uniq` without support for callback shorthands
-     * or `this` binding.
+     * and `this` binding.
      *
      * @private
      * @param {Array} array The array to process.
@@ -1964,6 +2122,32 @@
       return result;
     }
 
+    /**
+     * Compiles a function from `source` using the `varNames` and `varValues`
+     * pairs to import free variables into the compiled function. If `sourceURL`
+     * is provided it will be used as the sourceURL for the compiled function.
+     *
+     * @private
+     * @param {string} source The source to compile.
+     * @param {Array} varNames An array of free variable names.
+     * @param {Array} varValues An array of free variable values.
+     * @param {string} [sourceURL=''] The sourceURL of the source.
+     * @returns {Function} Returns the compiled function.
+     */
+    function compileFunction(source, varNames, varValues, sourceURL) {
+      sourceURL = sourceURL ? ('\n/*\n//# sourceURL=' + sourceURL + '\n*/') : '';
+      try {
+        // provide the compiled function's source by its `toString` method or
+        // the `source` property as a convenience for inlining compiled templates
+        var result = Function(varNames, 'return ' + source + sourceURL).apply(undefined, varValues);
+        result.source = source;
+      } catch(e) {
+        e.source = source;
+        throw e;
+      }
+      return result;
+    }
+
     /**
      * Creates an array that is the composition of partially applied arguments,
      * placeholders, and provided arguments into a single array of arguments.
@@ -2030,7 +2214,7 @@
      * Creates a function that aggregates a collection, creating an accumulator
      * object composed from the results of running each element in the collection
      * through a callback. The given setter function sets the keys and values of
-     * the accumulator object. If `initializer` is provided will be used to
+     * the accumulator object. If `initializer` is provided it will be used to
      * initialize the accumulator object.
      *
      * @private
@@ -2060,6 +2244,41 @@
       };
     }
 
+    /**
+     * Creates a function that assigns properties of source object(s) to a given
+     * destination object.
+     *
+     * @private
+     * @param {Function} assigner The function to customize assigning values.
+     * @returns {Function} Returns the new assigner function.
+     */
+    function createAssigner(assigner) {
+      return function(object) {
+        var args = arguments,
+            length = args.length;
+
+        if (!object || length < 2) {
+          return object;
+        }
+        // enables use as a callback for functions like `_.reduce`
+        var type = typeof args[2];
+        if ((type == 'number' || type == 'string') && args[3] && args[3][args[2]] === args[1]) {
+          length = 2;
+        }
+        // juggle arguments
+        if (length > 3 && typeof args[length - 2] == 'function') {
+          var callback = baseCreateCallback(args[--length - 1], args[length--], 2);
+        } else if (length > 2 && typeof args[length - 1] == 'function') {
+          callback = args[--length];
+        }
+        var index = 0;
+        while (++index < length) {
+          assigner(object, args[index], callback);
+        }
+        return object;
+      };
+    }
+
     /**
      * Creates a cache object to optimize linear searches of large arrays.
      *
@@ -2258,6 +2477,7 @@
     var setData = !defineProperty ? noop : function(func, value) {
       descriptor.value = value;
       defineProperty(func, expando, descriptor);
+      descriptor.value = null;
     };
 
     /**
@@ -2987,7 +3207,7 @@
      * @memberOf _
      * @category Arrays
      * @param {Array} array The array to modify.
-     * @param {...(number|number[])} [index] The indexes of values to remove,
+     * @param {...(number|number[])} [indexes] The indexes of elements to remove,
      *  specified as individual indexes or arrays of indexes.
      * @returns {Array} Returns the new array of removed elements.
      * @example
@@ -3002,19 +3222,7 @@
      * // => [10, 20]
      */
     function pullAt(array) {
-      var indexes = baseFlatten(arguments, true, false, 1),
-          length = indexes.length,
-          result = baseAt(array, indexes);
-
-      indexes.sort(baseCompareAscending);
-      while (length--) {
-        var index = parseFloat(indexes[length]);
-        if (index != previous && index > -1 && index % 1 == 0) {
-          var previous = index;
-          splice.call(array, index, 1);
-        }
-      }
-      return result;
+      return basePullAt(array, baseFlatten(arguments, true, false, 1));
     }
 
     /**
@@ -3121,7 +3329,7 @@
       var index = -1,
           length = array ? array.length : 0;
 
-      start = typeof start == 'undefined' ? 0 : (+start || 0);
+      start = start == null ? 0 : (+start || 0);
       if (start < 0) {
         start = nativeMax(length + start, 0);
       } else if (start > length) {
@@ -3704,8 +3912,8 @@
     }
 
     /**
-     * Checks if a given value is present in a collection using strict equality
-     * for comparisons, i.e. `===`. If `fromIndex` is negative, it is used as the
+     * Checks if `value` is present in `collection` using strict equality for
+     * comparisons, i.e. `===`. If `fromIndex` is negative, it is used as the
      * offset from the end of the collection.
      *
      * @static
@@ -3834,8 +4042,10 @@
      */
     function every(collection, predicate, thisArg) {
       var result = true;
-      predicate = lodash.createCallback(predicate, thisArg, 3);
 
+      if (typeof predicate != 'function' || typeof thisArg != 'undefined') {
+        predicate = lodash.createCallback(predicate, thisArg, 3);
+      }
       if (isArray(collection)) {
         var index = -1,
             length = collection.length;
@@ -3847,7 +4057,8 @@
         }
       } else {
         baseEach(collection, function(value, index, collection) {
-          return (result = !!predicate(value, index, collection));
+          result = !!predicate(value, index, collection);
+          return result;
         });
       }
       return result;
@@ -4049,7 +4260,7 @@
      * // => logs each number and returns the object (property order is not guaranteed across environments)
      */
     function forEach(collection, callback, thisArg) {
-      return (callback && typeof thisArg == 'undefined' && isArray(collection))
+      return (typeof callback == 'function' && typeof thisArg == 'undefined' && isArray(collection))
         ? arrayEach(collection, callback)
         : baseEach(collection, baseCreateCallback(callback, thisArg, 3));
     }
@@ -4072,7 +4283,7 @@
      * // => logs each number from right to left and returns '3,2,1'
      */
     function forEachRight(collection, callback, thisArg) {
-      return (callback && typeof thisArg == 'undefined' && isArray(collection))
+      return (typeof callback == 'function' && typeof thisArg == 'undefined' && isArray(collection))
         ? arrayEachRight(collection, callback)
         : baseEachRight(collection, baseCreateCallback(callback, thisArg, 3));
     }
@@ -4175,7 +4386,7 @@
      * @param {Array|Object|string} collection The collection to iterate over.
      * @param {Function|string} methodName The name of the method to invoke or
      *  the function invoked per iteration.
-     * @param {...*} [args] Arguments to invoke the method with.
+     * @param {...*} [args] The arguments to invoke the method with.
      * @returns {Array} Returns the array of results.
      * @example
      *
@@ -4186,17 +4397,7 @@
      * // => [['1', '2', '3'], ['4', '5', '6']]
      */
     function invoke(collection, methodName) {
-      var args = slice(arguments, 2),
-          index = -1,
-          isFunc = typeof methodName == 'function',
-          length = collection && collection.length,
-          result = Array(length < 0 ? 0 : length >>> 0);
-
-      baseEach(collection, function(value) {
-        var func = isFunc ? methodName : (value != null && value[methodName]);
-        result[++index] = func ? func.apply(value, args) : undefined;
-      });
-      return result;
+      return baseInvoke(collection, methodName, slice(arguments, 2));
     }
 
     /**
@@ -4740,8 +4941,10 @@
      */
     function some(collection, predicate, thisArg) {
       var result;
-      predicate = lodash.createCallback(predicate, thisArg, 3);
 
+      if (typeof predicate != 'function' || typeof thisArg != 'undefined') {
+        predicate = lodash.createCallback(predicate, thisArg, 3);
+      }
       if (isArray(collection)) {
         var index = -1,
             length = collection.length;
@@ -4753,7 +4956,8 @@
         }
       } else {
         baseEach(collection, function(value, index, collection) {
-          return !(result = predicate(value, index, collection));
+          result = predicate(value, index, collection);
+          return !result;
         });
       }
       return !!result;
@@ -4944,7 +5148,7 @@
      * @category Functions
      * @param {Function} func The function to bind.
      * @param {*} [thisArg] The `this` binding of `func`.
-     * @param {...*} [args] Arguments to be partially applied.
+     * @param {...*} [args] The arguments to be partially applied.
      * @returns {Function} Returns the new bound function.
      * @example
      *
@@ -4981,8 +5185,8 @@
      * @memberOf _
      * @category Functions
      * @param {Object} object The object to bind and assign the bound methods to.
-     * @param {...string} [methodNames] The object method names to bind, specified
-     *  as individual method names or arrays of method names.
+     * @param {...(string|string[])} [methodNames] The object method names to bind,
+     *  specified as individual method names or arrays of method names.
      * @returns {Object} Returns `object`.
      * @example
      *
@@ -4996,12 +5200,26 @@
      * // => logs 'clicked docs', when the button is clicked
      */
     function bindAll(object) {
-      var funcs = arguments.length > 1 ? baseFlatten(arguments, true, false, 1) : functions(object),
-          index = -1,
-          length = funcs.length;
+      return baseBindAll(object, arguments.length > 1
+        ? baseFlatten(arguments, true, false, 1)
+        : functions(object));
+    }
+
+    /**
+     * The base implementation of `_.bindAll` without support for individual
+     * method name arguments.
+     *
+     * @private
+     * @param {Object} object The object to bind and assign the bound methods to.
+     * @param {string[]} methodNames The object method names to bind.
+     * @returns {Object} Returns `object`.
+     */
+    function baseBindAll(object, methodNames) {
+      var index = -1,
+          length = methodNames.length;
 
       while (++index < length) {
-        var key = funcs[index];
+        var key = methodNames[index];
         object[key] = createWrapper(object[key], BIND_FLAG, null, object);
       }
       return object;
@@ -5020,7 +5238,7 @@
      * @category Functions
      * @param {Object} object The object the method belongs to.
      * @param {string} key The key of the method.
-     * @param {...*} [args] Arguments to be partially applied.
+     * @param {...*} [args] The arguments to be partially applied.
      * @returns {Function} Returns the new bound function.
      * @example
      *
@@ -5284,7 +5502,7 @@
      * @memberOf _
      * @category Functions
      * @param {Function} func The function to defer.
-     * @param {...*} [args] Arguments to invoke the function with.
+     * @param {...*} [args] The arguments to invoke the function with.
      * @returns {number} Returns the timer id.
      * @example
      *
@@ -5308,7 +5526,7 @@
      * @category Functions
      * @param {Function} func The function to delay.
      * @param {number} wait The number of milliseconds to delay execution.
-     * @param {...*} [args] Arguments to invoke the function with.
+     * @param {...*} [args] The arguments to invoke the function with.
      * @returns {number} Returns the timer id.
      * @example
      *
@@ -5453,7 +5671,7 @@
      * @memberOf _
      * @category Functions
      * @param {Function} func The function to partially apply arguments to.
-     * @param {...*} [args] Arguments to be partially applied.
+     * @param {...*} [args] The arguments to be partially applied.
      * @returns {Function} Returns the new partially applied function.
      * @example
      *
@@ -5483,7 +5701,7 @@
      * @memberOf _
      * @category Functions
      * @param {Function} func The function to partially apply arguments to.
-     * @param {...*} [args] Arguments to be partially applied.
+     * @param {...*} [args] The arguments to be partially applied.
      * @returns {Function} Returns the new partially applied function.
      * @example
      *
@@ -5589,8 +5807,8 @@
      * Assigns own enumerable properties of source object(s) to the destination
      * object. Subsequent sources will overwrite property assignments of previous
      * sources. If a callback is provided it will be executed to produce the
-     * assigned values. The callback is bound to `thisArg` and invoked with two
-     * arguments; (objectValue, sourceValue).
+     * assigned values. The callback is bound to `thisArg` and invoked with
+     * five arguments; (objectValue, sourceValue, key, object, source).
      *
      * @static
      * @memberOf _
@@ -5613,45 +5831,14 @@
      * defaults({ 'name': 'barney' }, { 'name': 'fred', 'employer': 'slate' });
      * // => { 'name': 'barney', 'employer': 'slate' }
      */
-    function assign(object, source, guard) {
-      var args = arguments;
-      if (!object || args.length < 2) {
-        return object;
-      }
-      var argsIndex = 0,
-          argsLength = args.length,
-          type = typeof guard;
-
-      // enables use as a callback for functions like `_.reduce`
-      if ((type == 'number' || type == 'string') && args[3] && args[3][guard] === source) {
-        argsLength = 2;
-      }
-      // juggle arguments
-      if (argsLength > 3 && typeof args[argsLength - 2] == 'function') {
-        var callback = baseCreateCallback(args[--argsLength - 1], args[argsLength--], 2);
-      } else if (argsLength > 2 && typeof args[argsLength - 1] == 'function') {
-        callback = args[--argsLength];
-      }
-      while (++argsIndex < argsLength) {
-        source = args[argsIndex];
-        var index = -1,
-            props = keys(source),
-            length = props.length;
-
-        while (++index < length) {
-          var key = props[index];
-          object[key] = callback ? callback(object[key], source[key]) : source[key];
-        }
-      }
-      return object;
-    }
+    var assign = createAssigner(baseAssign);
 
     /**
      * Creates a clone of `value`. If `isDeep` is `true` nested objects will also
      * be cloned, otherwise they will be assigned by reference. If a callback
      * is provided it will be executed to produce the cloned values. If the
      * callback returns `undefined` cloning will be handled by the method instead.
-     * The callback is bound to `thisArg` and invoked with one argument; (value).
+     * The callback is bound to `thisArg` and invoked with two argument; (value, index|key).
      *
      * Note: This method is loosely based on the structured clone algorithm. Functions
      * and DOM nodes are **not** cloned. The enumerable properties of `arguments` objects and
@@ -5714,7 +5901,7 @@
      * Creates a deep clone of `value`. If a callback is provided it will be
      * executed to produce the cloned values. If the callback returns `undefined`
      * cloning will be handled by the method instead. The callback is bound to
-     * `thisArg` and invoked with one argument; (value).
+     * `thisArg` and invoked with two argument; (value, index|key).
      *
      * Note: This method is loosely based on the structured clone algorithm. Functions
      * and DOM nodes are **not** cloned. The enumerable properties of `arguments` objects and
@@ -5790,7 +5977,7 @@
      */
     function create(prototype, properties) {
       var result = baseCreate(prototype);
-      return properties ? assign(result, properties) : result;
+      return properties ? baseAssign(result, properties) : result;
     }
 
     /**
@@ -5942,7 +6129,9 @@
      * // => logs 'x', 'y', and 'z' (property order is not guaranteed across environments)
      */
     function forIn(object, callback, thisArg) {
-      callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
+      if (typeof callback != 'function' || typeof thisArg != 'undefined') {
+        callback = baseCreateCallback(callback, thisArg, 3);
+      }
       return baseFor(object, callback, keysIn);
     }
 
@@ -5997,7 +6186,9 @@
      * // => logs '0', '1', and 'length' (property order is not guaranteed across environments)
      */
     function forOwn(object, callback, thisArg) {
-      callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
+      if (typeof callback != 'function' || typeof thisArg != 'undefined') {
+        callback = baseCreateCallback(callback, thisArg, 3);
+      }
       return baseForOwn(object, callback);
     }
 
@@ -6268,7 +6459,8 @@
         return !length;
       }
       baseForOwn(value, function() {
-        return (result = false);
+        result = false;
+        return result;
       });
       return result;
     }
@@ -6278,7 +6470,7 @@
      * equivalent. If a callback is provided it will be executed to compare
      * values. If the callback returns `undefined` comparisons will be handled
      * by the method instead. The callback is bound to `thisArg` and invoked
-     * with two arguments; (value, other).
+     * with three arguments; (value, other, key).
      *
      * Note: This method supports comparing arrays, booleans, `Date` objects,
      * numbers, `Object` objects, regexes, and strings. Functions and DOM nodes
@@ -6404,7 +6596,9 @@
      * // => false
      */
     function isFunction(value) {
-      return typeof value == 'function';
+      // avoid a Chakra bug in IE 11
+      // https://github.com/jashkenas/underscore/issues/1621
+      return typeof value == 'function' || false;
     }
     // fallback for older versions of Chrome and Safari
     if (isFunction(/x/)) {
@@ -6417,6 +6611,8 @@
      * Checks if `value` is the language type of `Object`.
      * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
      *
+     * Note: See the [ES5 spec](http://es5.github.io/#x8) for more details.
+     *
      * @static
      * @memberOf _
      * @category Objects
@@ -6434,9 +6630,7 @@
      * // => false
      */
     function isObject(value) {
-      // check if the value is the ECMAScript language type of `Object`
-      // http://es5.github.io/#x8
-      // and avoid a V8 bug
+      // avoid a V8 bug in Chrome 19-20
       // https://code.google.com/p/v8/issues/detail?id=2291
       var type = typeof value;
       return type == 'function' || (value && type == 'object') || false;
@@ -6782,7 +6976,7 @@
      * provided it will be executed to produce the merged values of the destination
      * and source properties. If the callback returns `undefined` merging will
      * be handled by the method instead. The callback is bound to `thisArg` and
-     * invoked with two arguments; (objectValue, sourceValue).
+     * invoked with five arguments; (objectValue, sourceValue, key, object, source).
      *
      * @static
      * @memberOf _
@@ -6826,34 +7020,7 @@
      * });
      * // => { 'fruits': ['apple', 'banana'], 'vegetables': ['beet', 'carrot] }
      */
-    function merge(object, source, guard) {
-      var args = arguments,
-          length = args.length,
-          type = typeof guard;
-
-      if (!object || length < 2) {
-        return object;
-      }
-      // enables use as a callback for functions like `_.reduce`
-      if ((type == 'number' || type == 'string') && args[3] && args[3][guard] === source) {
-        length = 2;
-      }
-      // juggle arguments
-      if (length > 3 && typeof args[length - 2] == 'function') {
-        var callback = baseCreateCallback(args[--length - 1], args[length--], 2);
-      } else if (length > 2 && typeof args[length - 1] == 'function') {
-        callback = args[--length];
-      }
-      var sources = slice(args, 1, length),
-          index = -1,
-          stackA = [],
-          stackB = [];
-
-      while (++index < length) {
-        baseMerge(object, sources[index], callback, stackA, stackB);
-      }
-      return object;
-    }
+    var merge = createAssigner(baseMerge);
 
     /**
      * Creates a shallow clone of `object` excluding the specified properties.
@@ -6883,9 +7050,11 @@
      * // => { 'name': 'fred' }
      */
     function omit(object, predicate, thisArg) {
+      if (!isObject(object)) {
+        return {};
+      }
       if (typeof predicate == 'function') {
-        predicate = lodash.createCallback(predicate, thisArg, 3);
-        return pick(object, negate(predicate));
+        return basePick(object, negate(lodash.createCallback(predicate, thisArg, 3)));
       }
       var omitProps = baseFlatten(arguments, true, false, 1),
           length = omitProps.length;
@@ -6893,7 +7062,7 @@
       while (length--) {
         omitProps[length] = String(omitProps[length]);
       }
-      return pick(object, baseDifference(keysIn(object), omitProps));
+      return basePick(object, baseDifference(keysIn(object), omitProps));
     }
 
     /**
@@ -6951,28 +7120,12 @@
      * // => { 'name': 'fred' }
      */
     function pick(object, predicate, thisArg) {
-      var result = {};
-
-      if (typeof predicate != 'function') {
-        var index = -1,
-            props = baseFlatten(arguments, true, false, 1),
-            length = isObject(object) ? props.length : 0;
-
-        while (++index < length) {
-          var key = props[index];
-          if (key in object) {
-            result[key] = object[key];
-          }
-        }
-      } else {
-        predicate = lodash.createCallback(predicate, thisArg, 3);
-        baseForIn(object, function(value, key, object) {
-          if (predicate(value, key, object)) {
-            result[key] = value;
-          }
-        });
+      if (!isObject(object)) {
+        return {};
       }
-      return result;
+      return basePick(object, typeof predicate == 'function'
+        ? lodash.createCallback(predicate, thisArg, 3)
+        : baseFlatten(arguments, true, false, 1));
     }
 
     /**
@@ -7420,7 +7573,7 @@
      * settings object is provided it will override `_.templateSettings` for the
      * template.
      *
-     * Note: In the development build, `_.template` utilizes `sourceURL`s for easier debugging.
+     * Note: In the development build, `_.template` utilizes sourceURLs for easier debugging.
      * See the [HTML5 Rocks article on sourcemaps](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
      * for more details.
      *
@@ -7438,9 +7591,9 @@
      * @param {Object} [options] The options object.
      * @param {RegExp} [options.escape] The HTML "escape" delimiter.
      * @param {RegExp} [options.evaluate] The "evaluate" delimiter.
-     * @param {Object} [options.imports] An object to import into the template as local variables.
+     * @param {Object} [options.imports] An object to import into the template as free variables.
      * @param {RegExp} [options.interpolate] The "interpolate" delimiter.
-     * @param {string} [options.sourceURL] The `sourceURL` of the template's compiled source.
+     * @param {string} [options.sourceURL] The sourceURL of the template's compiled source.
      * @param {string} [options.variable] The data object variable name.
      * @returns {Function|string} Returns the interpolated string if a data object
      *  is provided, else the compiled template function.
@@ -7478,7 +7631,7 @@
      * _.template(list, { 'people': ['fred', 'barney'] }, { 'imports': { 'jq': jQuery } });
      * // => '<li>fred</li><li>barney</li>'
      *
-     * // using the `sourceURL` option to specify a custom `sourceURL` for the template
+     * // using the `sourceURL` option to specify a custom sourceURL for the template
      * var compiled = _.template('hello <%= name %>', null, { 'sourceURL': '/basic/greeting.jst' });
      * compiled(data);
      * // => find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector
@@ -7506,10 +7659,10 @@
       // and Laura Doktorova's doT.js
       // https://github.com/olado/doT
       var settings = lodash.templateSettings;
-      options = defaults({}, options, settings);
+      options = assign({}, options, settings, assignOwnDefaults);
       string = String(string == null ? '' : string);
 
-      var imports = defaults({}, options.imports, settings.imports),
+      var imports = assign({}, options.imports, settings.imports, assignOwnDefaults),
           importsKeys = keys(imports),
           importsValues = values(imports);
 
@@ -7584,24 +7737,12 @@
         source +
         'return __p\n}';
 
-      // Use a `sourceURL` for easier debugging.
+      // use a sourceURL for easier debugging
       // http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl
-      var sourceURL = '\n/*\n//# sourceURL=' + (options.sourceURL || '/lodash/template/source[' + (templateCounter++) + ']') + '\n*/';
+      var sourceURL = options.sourceURL || ('/lodash/template/source[' + (templateCounter++) + ']'),
+          result = compileFunction(source, importsKeys, importsValues, sourceURL);
 
-      try {
-        var result = Function(importsKeys, 'return ' + source + sourceURL).apply(undefined, importsValues);
-      } catch(e) {
-        e.source = source;
-        throw e;
-      }
-      if (data) {
-        return result(data);
-      }
-      // provide the compiled function's source by its `toString` method, in
-      // supported environments, or the `source` property as a convenience for
-      // inlining compiled templates during the build process
-      result.source = source;
-      return result;
+      return data ? result(data) : result;
     }
 
     /**
@@ -7852,10 +7993,14 @@
      * // => [{ 'name': 'fred', 'age': 40 }]
      */
     function createCallback(func, thisArg, argCount) {
-      var type = typeof func;
-      if (type == 'function' || func == null) {
-        return (typeof thisArg == 'undefined' || !(func && 'prototype' in func)) &&
-          func || baseCreateCallback(func, thisArg, argCount);
+      var type = typeof func,
+          isFunc = type == 'function';
+
+      if (isFunc && (typeof thisArg == 'undefined' || !('prototype' in func))) {
+        return func;
+      }
+      if (isFunc || func == null) {
+        return baseCreateCallback(func, thisArg, argCount);
       }
       // handle "_.pluck" and "_.where" style callback shorthands
       return type == 'object' ? matches(func) : property(func);
@@ -7927,15 +8072,14 @@
         if (length && !object) {
           return false;
         }
-        var result = true;
         while (length--) {
           var key = props[length];
-          if (!(result = hasOwnProperty.call(object, key) &&
-              baseIsEqual(object[key], source[key], null, true))) {
-            break;
+          if (!(hasOwnProperty.call(object, key) &&
+                baseIsEqual(object[key], source[key], null, true))) {
+            return false;
           }
         }
-        return result;
+        return true;
       };
     }
 
@@ -8298,7 +8442,7 @@
      * @returns {Array} Returns the array of results.
      * @example
      *
-     * var diceRolls = _.times(3, _.partial(_.random, 1, 6));
+     * var diceRolls = _.times(3, _.partial(_.random, 1, 6, false));
      * // => [3, 6, 4]
      *
      * _.times(3, function(n) { mage.castSpell(n); });
@@ -8441,7 +8585,7 @@
     lodash.unzip = zip;
 
     // add functions to `lodash.prototype`
-    mixin(lodash, assign({}, lodash));
+    mixin(lodash, baseAssign({}, lodash));
 
     /*--------------------------------------------------------------------------*/
 
@@ -8521,7 +8665,7 @@
     lodash.inject = reduce;
 
     mixin(lodash, (function() {
-      var source = {}
+      var source = {};
       baseForOwn(lodash, function(func, methodName) {
         if (!lodash.prototype[methodName]) {
           source[methodName] = func;
@@ -8545,9 +8689,9 @@
     lodash.head = first;
 
     baseForOwn(lodash, function(func, methodName) {
-      var callbackable = methodName !== 'sample';
+      var callbackable = methodName != 'sample';
       if (!lodash.prototype[methodName]) {
-        lodash.prototype[methodName]= function(n, guard) {
+        lodash.prototype[methodName] = function(n, guard) {
           var chainAll = this.__chain__,
               result = func(this.__wrapped__, n, guard);
 
@@ -8578,7 +8722,7 @@
 
     // add `Array` functions that return unwrapped values
     arrayEach(['join', 'pop', 'shift'], function(methodName) {
-      var func = arrayRef[methodName];
+      var func = arrayProto[methodName];
       lodash.prototype[methodName] = function() {
         var chainAll = this.__chain__,
             result = func.apply(this.__wrapped__, arguments);
@@ -8591,7 +8735,7 @@
 
     // add `Array` functions that return the existing wrapped value
     arrayEach(['push', 'reverse', 'sort', 'unshift'], function(methodName) {
-      var func = arrayRef[methodName];
+      var func = arrayProto[methodName];
       lodash.prototype[methodName] = function() {
         func.apply(this.__wrapped__, arguments);
         return this;
@@ -8600,7 +8744,7 @@
 
     // add `Array` functions that return new wrapped values
     arrayEach(['concat', 'splice'], function(methodName) {
-      var func = arrayRef[methodName];
+      var func = arrayProto[methodName];
       lodash.prototype[methodName] = function() {
         return new lodashWrapper(func.apply(this.__wrapped__, arguments), this.__chain__);
       };
@@ -8610,7 +8754,7 @@
     // in IE < 9, Firefox < 10, Narwhal, and RingoJS
     if (!support.spliceObjects) {
       arrayEach(['pop', 'shift', 'splice'], function(methodName) {
-        var func = arrayRef[methodName],
+        var func = arrayProto[methodName],
             isSplice = methodName == 'splice';
 
         lodash.prototype[methodName] = function() {
diff --git a/dist/lodash.compat.min.js b/dist/lodash.compat.min.js
index 3ea1cb76f..faeb5016e 100644
--- a/dist/lodash.compat.min.js
+++ b/dist/lodash.compat.min.js
@@ -3,68 +3,68 @@
  * Lo-Dash 2.4.1 (Custom Build) lodash.com/license | Underscore.js 1.6.0 underscorejs.org/LICENSE
  * Build: `lodash -o ./dist/lodash.compat.js`
  */
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+},U.trim=$r,U.trimLeft=function(n,t){return(n=null==n?"":Qr(n))?null==t?n.slice(h(n)):(t=Qr(t),n.slice(o(n,t))):n},U.trimRight=function(n,t){return(n=null==n?"":Qr(n))?null==t?n.slice(0,v(n)+1):(t=Qr(t),n.slice(0,i(n,t)+1)):n},U.truncate=function(n,t){var r=30,e="...";if(t&&Sr(t))var u="separator"in t?t.separator:u,r="length"in t?+t.length||0:r,e="omission"in t?Qr(t.omission):e;else null!=t&&(r=+t||0);if(n=null==n?"":Qr(n),r>=n.length)return n;var o=r-e.length;if(1>o)return e;if(r=n.slice(0,o),null==u)return r+e;
+if(Rr(u)){if(n.slice(o).search(u)){var i,a,l=n.slice(0,o);for(u.global||(u=Hr(u.source,(D.exec(u)||"")+"g")),u.lastIndex=0;i=u.exec(l);)a=i.index;r=r.slice(0,null==a?o:a)}}else n.indexOf(u,o)!=o&&(u=r.lastIndexOf(u),-1<u&&(r=r.slice(0,u)));return r+e},U.unescape=function(n){return null==n?"":(n=Qr(n),0>n.indexOf(";")?n:n.replace(T,y))},U.uniqueId=function(n){var t=++A;return Qr(null==n?"":n)+t},U.all=cr,U.any=wr,U.detect=pr,U.foldl=mr,U.foldr=br,U.include=fr,U.inject=mr,Br(U,function(){var n={};return It(U,function(t,r){U.prototype[r]||(n[r]=t)
+}),n}(),false),U.first=Ht,U.last=tr,U.sample=function(n,t,r){return n&&typeof n.length!="number"?n=Lr(n):We.unindexedChars&&Nr(n)&&(n=n.split("")),null==t||r?(t=n?n.length:0,0<t?n[$t(0,t-1)]:m):(n=_r(n),n.length=Ie(0>t?0:+t||0,n.length),n)},U.take=Ht,U.takeRight=tr,U.takeRightWhile=tr,U.takeWhile=Ht,U.head=Ht,It(U,function(n,t){var r="sample"!=t;U.prototype[t]||(U.prototype[t]=function(t,e){var u=this.__chain__,o=n(this.__wrapped__,t,e);return u||null!=t&&(!e||r&&typeof t=="function")?new V(o,u):o})
+}),U.VERSION=k,U.prototype.chain=function(){return this.__chain__=true,this},U.prototype.toJSON=lr,U.prototype.toString=function(){return Qr(this.__wrapped__)},U.prototype.value=lr,U.prototype.valueOf=lr,ct(["join","pop","shift"],function(n){var t=te[n];U.prototype[n]=function(){var n=this.__chain__,r=t.apply(this.__wrapped__,arguments);return n?new V(r,n):r}}),ct(["push","reverse","sort","unshift"],function(n){var t=te[n];U.prototype[n]=function(){return t.apply(this.__wrapped__,arguments),this}}),ct(["concat","splice"],function(n){var t=te[n];
+U.prototype[n]=function(){return new V(t.apply(this.__wrapped__,arguments),this.__chain__)}}),We.spliceObjects||ct(["pop","shift","splice"],function(n){var t=te[n],r="splice"==n;U.prototype[n]=function(){var n=this.__chain__,e=this.__wrapped__,u=t.apply(e,arguments);return 0===e.length&&delete e[0],n||r?new V(u,n):u}}),U}var m,b=1,_=2,w=4,x=8,C=16,j=32,k="2.4.1",O="__lodash@"+k+"__",E="Expected a function",A=0,S=/^[A-Z]+$/,I=/\b__p\+='';/g,R=/\b(__p\+=)''\+/g,N=/(__e\(.*?\)|\b__t\))\+'';/g,T=/&(?:amp|lt|gt|quot|#39);/g,L=/[&<>"']/g,F=/<%-([\s\S]+?)%>/g,W=/<%([\s\S]+?)%>/g,$=/<%=([\s\S]+?)%>/g,P=/\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g,D=/\w*$/,z=/^\s*function[ \n\r\t]+\w/,B=/^0[xX]/,U=/[\xC0-\xFF]/g,q=/($^)/,Z=/[.*+?^${}()|[\]\/\\]/g,K=/\bthis\b/,M=/['\n\r\u2028\u2029\\]/g,V=/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g,J=" \t\x0B\f\xa0\ufeff\n\r\u2028\u2029\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000",X="Array Boolean Date Error Function Math Number Object RegExp Set String _ clearTimeout document isFinite isNaN parseInt setTimeout TypeError window WinRTError".split(" "),Y="constructor hasOwnProperty isPrototypeOf propertyIsEnumerable toLocaleString toString valueOf".split(" "),G="[object Arguments]",H="[object Array]",Q="[object Boolean]",nt="[object Date]",tt="[object Error]",rt="[object Function]",et="[object Number]",ut="[object Object]",ot="[object RegExp]",it="[object String]",at={};
+at[rt]=false,at[G]=at[H]=at[Q]=at[nt]=at[et]=at[ut]=at[ot]=at[it]=true;var lt={leading:false,maxWait:0,trailing:false},ft={configurable:false,enumerable:false,value:null,writable:false},ct={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;"},st={"&amp;":"&","&lt;":"<","&gt;":">","&quot;":'"',"&#39;":"'"},pt={\u00c0:"A",\u00c1:"A",\u00c2:"A",\u00c3:"A",\u00c4:"A",\u00c5:"A",\u00e0:"a",\u00e1:"a",\u00e2:"a",\u00e3:"a",\u00e4:"a",\u00e5:"a",\u00c7:"C",\u00e7:"c",\u00d0:"D",\u00f0:"d",\u00c8:"E",\u00c9:"E",\u00ca:"E",\u00cb:"E",\u00e8:"e",\u00e9:"e",\u00ea:"e",\u00eb:"e",\u00cc:"I",\u00cd:"I",\u00ce:"I",\u00cf:"I",\u00ec:"i",\u00ed:"i",\u00ee:"i",\u00ef:"i",\u00d1:"N",\u00f1:"n",\u00d2:"O",\u00d3:"O",\u00d4:"O",\u00d5:"O",\u00d6:"O",\u00d8:"O",\u00f2:"o",\u00f3:"o",\u00f4:"o",\u00f5:"o",\u00f6:"o",\u00f8:"o",\u00d9:"U",\u00da:"U",\u00db:"U",\u00dc:"U",\u00f9:"u",\u00fa:"u",\u00fb:"u",\u00fc:"u",\u00dd:"Y",\u00fd:"y",\u00ff:"y",\u00c6:"AE",\u00e6:"ae",\u00de:"Th",\u00fe:"th",\u00df:"ss","\xd7":" ","\xf7":" "},gt={"function":true,object:true},ht={"\\":"\\","'":"'","\n":"n","\r":"r","\u2028":"u2028","\u2029":"u2029"},vt=gt[typeof window]&&window||this,yt=gt[typeof exports]&&exports&&!exports.nodeType&&exports,gt=gt[typeof module]&&module&&!module.nodeType&&module,dt=yt&&gt&&typeof global=="object"&&global;
+!dt||dt.global!==dt&&dt.window!==dt&&dt.self!==dt||(vt=dt);var dt=gt&&gt.exports===yt&&yt,mt=d();typeof define=="function"&&typeof define.amd=="object"&&define.amd?(vt._=mt, define(function(){return mt})):yt&&gt?dt?(gt.exports=mt)._=mt:yt._=mt:vt._=mt}).call(this);
\ No newline at end of file
diff --git a/dist/lodash.js b/dist/lodash.js
index b0b568a55..7611f17dd 100644
--- a/dist/lodash.js
+++ b/dist/lodash.js
@@ -85,7 +85,7 @@
   var reUnescapedString = /['\n\r\u2028\u2029\\]/g;
 
   /** Used to match words to create compound words */
-  var reWords = /[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[a-z]+|[0-9]+/g;
+  var reWords = /[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g;
 
   /** Used to detect and test whitespace */
   var whitespace = (
@@ -106,7 +106,7 @@
     'parseInt', 'setTimeout', 'TypeError', 'window', 'WinRTError'
   ];
 
-  /** Used to make template `sourceURL`s easier to identify */
+  /** Used to make template sourceURLs easier to identify */
   var templateCounter = 0;
 
   /** `Object#toString` result shortcuts */
@@ -232,24 +232,12 @@
   /*--------------------------------------------------------------------------*/
 
   /**
-   * Used by `_.defaults` to customize its `_.assign` use.
-   *
-   * @private
-   * @param {*} objectValue The destination object property value.
-   * @param {*} sourceValue The source object property value.
-   * @returns {*} Returns the value to assign to the destination object.
-   */
-  function assignDefaults(objectValue, sourceValue) {
-    return typeof objectValue == 'undefined' ? sourceValue : objectValue;
-  }
-
-  /**
-   * The base implementation of `_.at` without support for strings or individual
-   * key arguments.
+   * The base implementation of `_.at` without support for strings and
+   * individual key arguments.
    *
    * @private
    * @param {Array|Object} collection The collection to iterate over.
-   * @param {number[]|string[]} [keys] The keys of elements to pick.
+   * @param {number[]|string[]} [props] The keys of elements to pick.
    * @returns {Array} Returns the new array of picked elements.
    */
   function baseAt(collection, props) {
@@ -533,6 +521,21 @@
    * @category Utilities
    * @param {Object} [context=root] The context object.
    * @returns {Function} Returns a new `lodash` function.
+   * @example
+   *
+   * var lodash = _.runInContext();
+   *
+   * lodash.mixin({
+   *   'exists': function(value) {
+   *     return value != null;
+   *   }
+   * }, false);
+   *
+   * _.isFunction(lodash.exists);
+   * // => true
+   *
+   * _.isFunction(_.exists);
+   * // => false
    */
   function runInContext(context) {
     // Avoid issues with some ES3 environments that attempt to use values, named
@@ -554,7 +557,7 @@
         TypeError = context.TypeError;
 
     /** Used for native method references */
-    var arrayRef = Array.prototype,
+    var arrayProto = Array.prototype,
         objectProto = Object.prototype,
         stringProto = String.prototype;
 
@@ -587,12 +590,12 @@
         fnToString = Function.prototype.toString,
         getPrototypeOf = isNative(getPrototypeOf = Object.getPrototypeOf) && getPrototypeOf,
         hasOwnProperty = objectProto.hasOwnProperty,
-        push = arrayRef.push,
+        push = arrayProto.push,
         propertyIsEnumerable = objectProto.propertyIsEnumerable,
         Set = isNative(Set = context.Set) && Set,
         setTimeout = context.setTimeout,
-        splice = arrayRef.splice,
-        unshift = arrayRef.unshift;
+        splice = arrayProto.splice,
+        unshift = arrayProto.unshift;
 
     /** Used to set metadata on functions */
     var defineProperty = (function() {
@@ -906,6 +909,62 @@
       return result;
     }
 
+    /**
+     * Used by `_.defaults` to customize its `_.assign` use.
+     *
+     * @private
+     * @param {*} objectValue The destination object property value.
+     * @param {*} sourceValue The source object property value.
+     * @returns {*} Returns the value to assign to the destination object.
+     */
+    function assignDefaults(objectValue, sourceValue) {
+      return typeof objectValue == 'undefined' ? sourceValue : objectValue;
+    }
+
+    /**
+     * Used by `_.template` to customize its `_.assign` use.
+     *
+     * Note: This method is like `assignDefaults` except that it ignores
+     * inherited property values when checking if a property is `undefined`.
+     *
+     * @private
+     * @param {*} objectValue The destination object property value.
+     * @param {*} sourceValue The source object property value.
+     * @param {string} key The key associated with the object and source values.
+     * @param {Object} object The destination object.
+     * @returns {*} Returns the value to assign to the destination object.
+     */
+    function assignOwnDefaults(objectValue, sourceValue, key, object) {
+      return (!hasOwnProperty.call(object, key) || typeof objectValue == 'undefined')
+        ? sourceValue
+        : objectValue
+    }
+
+    /**
+     * The base implementation of `_.assign` without support for argument juggling,
+     * multiple sources, and `this` binding.
+     *
+     * @private
+     * @param {Object} object The destination object.
+     * @param {Object} source The source object.
+     * @param {Function} [callback] The function to customize assigning values.
+     * @returns {Object} Returns the destination object.
+     */
+    function baseAssign(object, source, callback) {
+      if (!object) {
+        return object;
+      }
+      var index = -1,
+          props = keys(source),
+          length = props.length;
+
+      while (++index < length) {
+        var key = props[index];
+        object[key] = callback ? callback(object[key], source[key], key, object, source) : source[key];
+      }
+      return object;
+    }
+
     /**
      * The base implementation of `_.bind` that creates the bound function and
      * sets its metadata.
@@ -926,12 +985,11 @@
         if (partialArgs) {
           // avoid `arguments` object use disqualifying optimizations by
           // converting it to an array before passing it to `composeArgs`
-          var index = -1,
-              length = arguments.length,
+          var length = arguments.length,
               args = Array(length);
 
-          while (++index < length) {
-            args[index] = arguments[index];
+          while (length--) {
+            args[length] = arguments[length];
           }
           args = composeArgs(partialArgs, partialHolders, args);
         }
@@ -951,8 +1009,8 @@
     }
 
     /**
-     * The base implementation of `_.clone` without argument juggling or support
-     * for `this` binding.
+     * The base implementation of `_.clone` without support for argument juggling
+     * and `this` binding.
      *
      * @private
      * @param {*} value The value to clone.
@@ -963,11 +1021,9 @@
      * @returns {*} Returns the cloned value.
      */
     function baseClone(value, isDeep, callback, stackA, stackB) {
-      if (callback) {
-        var result = callback(value);
-        if (typeof result != 'undefined') {
-          return result;
-        }
+      var result = callback ? callback(value) : undefined;
+      if (typeof result != 'undefined') {
+        return result;
       }
       var isObj = isObject(value);
       if (isObj) {
@@ -1008,7 +1064,7 @@
         result = isArr ? ctor(value.length) : {};
       }
       else {
-        result = isArr ? slice(value) : assign({}, value);
+        result = isArr ? slice(value) : baseAssign({}, value);
       }
       // add array properties assigned by `RegExp#exec`
       if (isArr) {
@@ -1030,7 +1086,10 @@
 
       // recursively populate clone (susceptible to call stack limits)
       (isArr ? arrayEach : baseForOwn)(value, function(valValue, key) {
-        result[key] = baseClone(valValue, isDeep, callback, stackA, stackB);
+        var valClone = callback ? callback(valValue, key) : undefined;
+        result[key] = typeof valClone == 'undefined'
+          ? baseClone(valValue, isDeep, null, stackA, stackB)
+          : valClone;
       });
 
       return result;
@@ -1064,7 +1123,7 @@
 
     /**
      * The base implementation of `_.createCallback` without support for creating
-     * "_.pluck" or "_.where" style callbacks.
+     * "_.pluck" and "_.where" style callbacks.
      *
      * @private
      * @param {*} [func=identity] The value to convert to a callback.
@@ -1144,11 +1203,11 @@
           key = func;
 
       function bound() {
-        var index = -1,
-            length = arguments.length,
+        var length = arguments.length,
+            index = length,
             args = Array(length);
 
-        while (++index < length) {
+        while (index--) {
           args[index] = arguments[index];
         }
         if (partialArgs) {
@@ -1234,7 +1293,7 @@
 
     /**
      * The base implementation of `_.forEach` without support for callback
-     * shorthands or `this` binding.
+     * shorthands and `this` binding.
      *
      * @private
      * @param {Array|Object|string} collection The collection to iterate over.
@@ -1260,7 +1319,7 @@
 
     /**
      * The base implementation of `_.forEachRight` without support for callback
-     * shorthands or `this` binding.
+     * shorthands and `this` binding.
      *
      * @private
      * @param {Array|Object|string} collection The collection to iterate over.
@@ -1284,8 +1343,8 @@
     }
 
     /**
-     * The base implementation of `_.find`, `_.findLast`, `_.findKey`, and `_.findLastKey`
-     * without support for callback shorthands or `this` binding which iterates
+     * The base implementation of `_.find`, `_.findLast`, `_.findKey`, and `_.findLastKey`,
+     * without support for callback shorthands and `this` binding, which iterates
      * over `collection` using the provided `eachFunc`.
      *
      * @private
@@ -1310,7 +1369,7 @@
 
     /**
      * The base implementation of `_.flatten` without support for callback
-     * shorthands or `this` binding.
+     * shorthands and `this` binding.
      *
      * @private
      * @param {Array} array The array to flatten.
@@ -1399,7 +1458,7 @@
 
     /**
      * The base implementation of `_.forIn` without support for callback
-     * shorthands or `this` binding.
+     * shorthands and `this` binding.
      *
      * @private
      * @param {Object} object The object to iterate over.
@@ -1412,7 +1471,7 @@
 
     /**
      * The base implementation of `_.forOwn` without support for callback
-     * shorthands or `this` binding.
+     * shorthands and `this` binding.
      *
      * @private
      * @param {Object} object The object to iterate over.
@@ -1425,7 +1484,7 @@
 
     /**
      * The base implementation of `_.forOwnRight` without support for callback
-     * shorthands or `this` binding.
+     * shorthands and `this` binding.
      *
      * @private
      * @param {Object} object The object to iterate over.
@@ -1462,7 +1521,7 @@
 
     /**
      * The base implementation of `_.isEqual`, without support for `thisArg`
-     * binding, that allows partial "_.where" style comparisons.
+     * binding, which allows partial "_.where" style comparisons.
      *
      * @private
      * @param {*} value The value to compare to `other`.
@@ -1474,11 +1533,9 @@
      * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
      */
     function baseIsEqual(value, other, callback, isWhere, stackA, stackB) {
-      if (callback) {
-        var result = callback(value, other);
-        if (typeof result != 'undefined') {
-          return !!result;
-        }
+      var result = callback && !stackA ? callback(value, other) : undefined;
+      if (typeof result != 'undefined') {
+        return !!result;
       }
       // exit early for identical values
       if (value === other) {
@@ -1572,7 +1629,6 @@
           return stackB[length] == other;
         }
       }
-      var size = 0;
       result = true;
 
       // add `value` and `other` to the stack of traversed objects
@@ -1582,40 +1638,57 @@
       // recursively compare objects and arrays (susceptible to call stack limits)
       if (isArr) {
         // compare lengths to determine if a deep comparison is necessary
+        var othLength = other.length;
         length = value.length;
-        size = other.length;
-        result = size == length;
+        result = othLength == length;
 
         if (result || isWhere) {
+          var othIndex = -1;
+
           // deep compare the contents, ignoring non-numeric properties
-          while (size--) {
-            var index = length,
-                othValue = other[size];
+          while (++othIndex < othLength) {
+            var othValue = other[othIndex];
 
             if (isWhere) {
-              while (index--) {
-                if ((result = baseIsEqual(value[index], othValue, callback, isWhere, stackA, stackB))) {
+              var index = -1;
+              while (++index < length) {
+                result = baseIsEqual(value[index], othValue, callback, isWhere, stackA, stackB);
+                if (result) {
                   break;
                 }
               }
-              if (!result) {
-                break;
-              }
-            } else if (!(result = baseIsEqual(value[size], othValue, callback, isWhere, stackA, stackB))) {
+            } else {
+              var valValue = value[othIndex];
+              result = callback ? callback(valValue, othValue, othIndex) : undefined;
+              result = typeof result == 'undefined'
+                ? baseIsEqual(valValue, othValue, callback, isWhere, stackA, stackB)
+                : !!result;
+            }
+            if (!result) {
               break;
             }
           }
         }
       }
       else {
+        var size = 0;
+
         // deep compare objects using `forIn`, instead of `forOwn`, to avoid `Object.keys`
         // which, in this case, is more costly
         baseForIn(other, function(othValue, key, other) {
           if (hasOwnProperty.call(other, key)) {
-            // count the number of properties.
+            result = false;
+            // count the number of properties
             size++;
-            // deep compare each property value.
-            return (result = hasOwnProperty.call(value, key) && baseIsEqual(value[key], othValue, callback, isWhere, stackA, stackB));
+            // deep compare each property value
+            if (hasOwnProperty.call(value, key)) {
+              var valValue = value[key];
+              result = callback ? callback(valValue, othValue, key) : undefined;
+              result = typeof result == 'undefined'
+                ? baseIsEqual(valValue, othValue, callback, isWhere, stackA, stackB)
+                : !!result;
+            }
+            return result;
           }
         });
 
@@ -1624,7 +1697,8 @@
           baseForIn(value, function(valValue, key, value) {
             if (hasOwnProperty.call(value, key)) {
               // `size` will be `-1` if `value` has more properties than `other`
-              return (result = --size > -1);
+              result = --size > -1;
+              return result;
             }
           });
         }
@@ -1636,8 +1710,32 @@
     }
 
     /**
-     * The base implementation of `_.merge` without argument juggling or support
-     * for `this` binding.
+     * The base implementation of `_.invoke` which requires additional arguments
+     * be provided as an array of arguments rather than individually.
+     *
+     * @private
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|string} methodName The name of the method to invoke or
+     *  the function invoked per iteration.
+     * @param {Array} [args] The arguments to invoke the method with.
+     * @returns {Array} Returns the array of results.
+     */
+    function baseInvoke(collection, methodName, args) {
+      var index = -1,
+          isFunc = typeof methodName == 'function',
+          length = collection && collection.length,
+          result = Array(length < 0 ? 0 : length >>> 0);
+
+      baseEach(collection, function(value) {
+        var func = isFunc ? methodName : (value != null && value[methodName]);
+        result[++index] = func ? func.apply(value, args) : undefined;
+      });
+      return result;
+    }
+
+    /**
+     * The base implementation of `_.merge` without support for argument juggling,
+     * multiple sources, and `this` binding.
      *
      * @private
      * @param {Object} object The destination object.
@@ -1645,64 +1743,124 @@
      * @param {Function} [callback] The function to customize merging properties.
      * @param {Array} [stackA=[]] Tracks traversed source objects.
      * @param {Array} [stackB=[]] Associates values with source counterparts.
+     * @returns {Object} Returns the destination object.
      */
     function baseMerge(object, source, callback, stackA, stackB) {
-      (isArray(source) ? arrayEach : baseForOwn)(source, function(source, key) {
-        var found,
-            isArr,
-            result = source,
+      if (!object) {
+        return object;
+      }
+      (isArray(source) ? arrayEach : baseForOwn)(source, function(srcValue, key, source) {
+        var isArr = srcValue && isArray(srcValue),
+            isObj = srcValue && isPlainObject(srcValue),
             value = object[key];
 
-        if (source && ((isArr = isArray(source)) || isPlainObject(source))) {
-          // avoid merging previously merged cyclic sources
-          var stackLength = stackA.length;
-          while (stackLength--) {
-            if ((found = stackA[stackLength] == source)) {
-              value = stackB[stackLength];
-              break;
-            }
-          }
-          if (!found) {
-            var isShallow;
-            if (callback) {
-              result = callback(value, source);
-              if ((isShallow = typeof result != 'undefined')) {
-                value = result;
-              }
-            }
-            if (!isShallow) {
-              value = isArr
-                ? (isArray(value) ? value : [])
-                : (isPlainObject(value) ? value : {});
-            }
-            // add `source` and associated `value` to the stack of traversed objects
-            stackA.push(source);
-            stackB.push(value);
-
-            // recursively merge objects and arrays (susceptible to call stack limits)
-            if (!isShallow) {
-              baseMerge(value, source, callback, stackA, stackB);
-            }
-          }
-        }
-        else {
-          if (callback) {
-            result = callback(value, source);
-            if (typeof result == 'undefined') {
-              result = source;
-            }
+        if (!(isArr || isObj)) {
+          result = callback ? callback(value, srcValue, key, object, source) : undefined;
+          if (typeof result == 'undefined') {
+            result = srcValue;
           }
           if (typeof result != 'undefined') {
             value = result;
           }
+          object[key] = value;
+          return;
+        }
+        // avoid merging previously merged cyclic sources
+        stackA || (stackA = []);
+        stackB || (stackB = []);
+
+        var length = stackA.length;
+        while (length--) {
+          if (stackA[length] == srcValue) {
+            object[key] = stackB[length];
+            return;
+          }
+        }
+        var result = callback ? callback(value, srcValue, key, object, source) : undefined,
+            isShallow = typeof result != 'undefined';
+
+        if (isShallow) {
+          value = result;
+        } else {
+          value = isArr
+            ? (isArray(value) ? value : [])
+            : (isPlainObject(value) ? value : {});
+        }
+        // add `source` and associated `value` to the stack of traversed objects
+        stackA.push(srcValue);
+        stackB.push(value);
+
+        // recursively merge objects and arrays (susceptible to call stack limits)
+        if (!isShallow) {
+          baseMerge(value, srcValue, callback, stackA, stackB);
         }
         object[key] = value;
       });
+
+      return object;
     }
 
     /**
-     * The base implementation of `_.random` without argument juggling or support
-     * for returning floating-point numbers.
+     * The base implementation of `_.pick` without support for `this` binding
+     * and individual property name arguments.
+     *
+     * @private
+     * @param {Object} object The source object.
+     * @param {Function|string[]} predicate The function called per iteration or
+     *  property names to pick.
+     * @returns {Object} Returns the new object.
+     */
+    function basePick(object, predicate) {
+      var result = {};
+
+      if (typeof predicate == 'function') {
+        baseForIn(object, function(value, key, object) {
+          if (predicate(value, key, object)) {
+            result[key] = value;
+          }
+        });
+        return result;
+      }
+      var index = -1,
+          props = predicate,
+          length = props.length;
+
+      while (++index < length) {
+        var key = props[index];
+        if (key in object) {
+          result[key] = object[key];
+        }
+      }
+      return result;
+    }
+
+    /**
+     * The base implementation of `_.pullAt` without support for individual
+     * index arguments.
+     *
+     * @private
+     * @param {Array} array The array to modify.
+     * @param {number[]} indexes The indexes of elements to remove.
+     * @returns {Array} Returns the new array of removed elements.
+     */
+    function basePullAt(array, indexes) {
+      var length = indexes.length,
+          result = baseAt(array, indexes);
+
+      indexes.sort(baseCompareAscending);
+      while (length--) {
+        var index = parseFloat(indexes[length]);
+        if (index != previous && index > -1 && index % 1 == 0) {
+          var previous = index;
+          splice.call(array, index, 1);
+        }
+      }
+      return result;
+    }
+
+    /**
+     * The base implementation of `_.random` without support for argument juggling
+     * and returning floating-point numbers.
      *
      * @private
      * @param {number} min The minimum possible value.
@@ -1715,7 +1873,7 @@
 
     /**
      * The base implementation of `_.uniq` without support for callback shorthands
-     * or `this` binding.
+     * and `this` binding.
      *
      * @private
      * @param {Array} array The array to process.
@@ -1796,6 +1954,32 @@
       return result;
     }
 
+    /**
+     * Compiles a function from `source` using the `varNames` and `varValues`
+     * pairs to import free variables into the compiled function. If `sourceURL`
+     * is provided it will be used as the sourceURL for the compiled function.
+     *
+     * @private
+     * @param {string} source The source to compile.
+     * @param {Array} varNames An array of free variable names.
+     * @param {Array} varValues An array of free variable values.
+     * @param {string} [sourceURL=''] The sourceURL of the source.
+     * @returns {Function} Returns the compiled function.
+     */
+    function compileFunction(source, varNames, varValues, sourceURL) {
+      sourceURL = sourceURL ? ('\n/*\n//# sourceURL=' + sourceURL + '\n*/') : '';
+      try {
+        // provide the compiled function's source by its `toString` method or
+        // the `source` property as a convenience for inlining compiled templates
+        var result = Function(varNames, 'return ' + source + sourceURL).apply(undefined, varValues);
+        result.source = source;
+      } catch(e) {
+        e.source = source;
+        throw e;
+      }
+      return result;
+    }
+
     /**
      * Creates an array that is the composition of partially applied arguments,
      * placeholders, and provided arguments into a single array of arguments.
@@ -1862,7 +2046,7 @@
      * Creates a function that aggregates a collection, creating an accumulator
      * object composed from the results of running each element in the collection
      * through a callback. The given setter function sets the keys and values of
-     * the accumulator object. If `initializer` is provided will be used to
+     * the accumulator object. If `initializer` is provided it will be used to
      * initialize the accumulator object.
      *
      * @private
@@ -1892,6 +2076,41 @@
       };
     }
 
+    /**
+     * Creates a function that assigns properties of source object(s) to a given
+     * destination object.
+     *
+     * @private
+     * @param {Function} assigner The function to customize assigning values.
+     * @returns {Function} Returns the new assigner function.
+     */
+    function createAssigner(assigner) {
+      return function(object) {
+        var args = arguments,
+            length = args.length;
+
+        if (!object || length < 2) {
+          return object;
+        }
+        // enables use as a callback for functions like `_.reduce`
+        var type = typeof args[2];
+        if ((type == 'number' || type == 'string') && args[3] && args[3][args[2]] === args[1]) {
+          length = 2;
+        }
+        // juggle arguments
+        if (length > 3 && typeof args[length - 2] == 'function') {
+          var callback = baseCreateCallback(args[--length - 1], args[length--], 2);
+        } else if (length > 2 && typeof args[length - 1] == 'function') {
+          callback = args[--length];
+        }
+        var index = 0;
+        while (++index < length) {
+          assigner(object, args[index], callback);
+        }
+        return object;
+      };
+    }
+
     /**
      * Creates a cache object to optimize linear searches of large arrays.
      *
@@ -2090,6 +2309,7 @@
     var setData = !defineProperty ? noop : function(func, value) {
       descriptor.value = value;
       defineProperty(func, expando, descriptor);
+      descriptor.value = null;
     };
 
     /**
@@ -2806,7 +3026,7 @@
      * @memberOf _
      * @category Arrays
      * @param {Array} array The array to modify.
-     * @param {...(number|number[])} [index] The indexes of values to remove,
+     * @param {...(number|number[])} [indexes] The indexes of elements to remove,
      *  specified as individual indexes or arrays of indexes.
      * @returns {Array} Returns the new array of removed elements.
      * @example
@@ -2821,19 +3041,7 @@
      * // => [10, 20]
      */
     function pullAt(array) {
-      var indexes = baseFlatten(arguments, true, false, 1),
-          length = indexes.length,
-          result = baseAt(array, indexes);
-
-      indexes.sort(baseCompareAscending);
-      while (length--) {
-        var index = parseFloat(indexes[length]);
-        if (index != previous && index > -1 && index % 1 == 0) {
-          var previous = index;
-          splice.call(array, index, 1);
-        }
-      }
-      return result;
+      return basePullAt(array, baseFlatten(arguments, true, false, 1));
     }
 
     /**
@@ -2940,7 +3148,7 @@
       var index = -1,
           length = array ? array.length : 0;
 
-      start = typeof start == 'undefined' ? 0 : (+start || 0);
+      start = start == null ? 0 : (+start || 0);
       if (start < 0) {
         start = nativeMax(length + start, 0);
       } else if (start > length) {
@@ -3520,8 +3728,8 @@
     }
 
     /**
-     * Checks if a given value is present in a collection using strict equality
-     * for comparisons, i.e. `===`. If `fromIndex` is negative, it is used as the
+     * Checks if `value` is present in `collection` using strict equality for
+     * comparisons, i.e. `===`. If `fromIndex` is negative, it is used as the
      * offset from the end of the collection.
      *
      * @static
@@ -3650,8 +3858,10 @@
      */
     function every(collection, predicate, thisArg) {
       var result = true;
-      predicate = lodash.createCallback(predicate, thisArg, 3);
 
+      if (typeof predicate != 'function' || typeof thisArg != 'undefined') {
+        predicate = lodash.createCallback(predicate, thisArg, 3);
+      }
       var index = -1,
           length = collection ? collection.length : 0;
 
@@ -3663,7 +3873,8 @@
         }
       } else {
         baseEach(collection, function(value, index, collection) {
-          return (result = !!predicate(value, index, collection));
+          result = !!predicate(value, index, collection);
+          return result;
         });
       }
       return result;
@@ -3868,8 +4079,10 @@
      */
     function forEach(collection, callback, thisArg) {
       var length = collection ? collection.length : 0;
-      callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
 
+      if (typeof callback != 'function' || typeof thisArg != 'undefined') {
+        callback = baseCreateCallback(callback, thisArg, 3);
+      }
       return (typeof length == 'number' && length > -1 && length <= maxSafeInteger)
         ? arrayEach(collection, callback)
         : baseEach(collection, callback);
@@ -3894,8 +4107,10 @@
      */
     function forEachRight(collection, callback, thisArg) {
       var length = collection ? collection.length : 0;
-      callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
 
+      if (typeof callback != 'function' || typeof thisArg != 'undefined') {
+        callback = baseCreateCallback(callback, thisArg, 3);
+      }
       return (typeof length == 'number' && length > -1 && length <= maxSafeInteger)
         ? arrayEachRight(collection, callback)
         : baseEachRight(collection, callback);
@@ -3999,7 +4214,7 @@
      * @param {Array|Object|string} collection The collection to iterate over.
      * @param {Function|string} methodName The name of the method to invoke or
      *  the function invoked per iteration.
-     * @param {...*} [args] Arguments to invoke the method with.
+     * @param {...*} [args] The arguments to invoke the method with.
      * @returns {Array} Returns the array of results.
      * @example
      *
@@ -4010,17 +4225,7 @@
      * // => [['1', '2', '3'], ['4', '5', '6']]
      */
     function invoke(collection, methodName) {
-      var args = slice(arguments, 2),
-          index = -1,
-          isFunc = typeof methodName == 'function',
-          length = collection && collection.length,
-          result = Array(length < 0 ? 0 : length >>> 0);
-
-      baseEach(collection, function(value) {
-        var func = isFunc ? methodName : (value != null && value[methodName]);
-        result[++index] = func ? func.apply(value, args) : undefined;
-      });
-      return result;
+      return baseInvoke(collection, methodName, slice(arguments, 2));
     }
 
     /**
@@ -4563,8 +4768,10 @@
      */
     function some(collection, predicate, thisArg) {
       var result;
-      predicate = lodash.createCallback(predicate, thisArg, 3);
 
+      if (typeof predicate != 'function' || typeof thisArg != 'undefined') {
+        predicate = lodash.createCallback(predicate, thisArg, 3);
+      }
       var index = -1,
           length = collection ? collection.length : 0;
 
@@ -4576,7 +4783,8 @@
         }
       } else {
         baseEach(collection, function(value, index, collection) {
-          return !(result = predicate(value, index, collection));
+          result = predicate(value, index, collection);
+          return !result;
         });
       }
       return !!result;
@@ -4765,7 +4973,7 @@
      * @category Functions
      * @param {Function} func The function to bind.
      * @param {*} [thisArg] The `this` binding of `func`.
-     * @param {...*} [args] Arguments to be partially applied.
+     * @param {...*} [args] The arguments to be partially applied.
      * @returns {Function} Returns the new bound function.
      * @example
      *
@@ -4802,8 +5010,8 @@
      * @memberOf _
      * @category Functions
      * @param {Object} object The object to bind and assign the bound methods to.
-     * @param {...string} [methodNames] The object method names to bind, specified
-     *  as individual method names or arrays of method names.
+     * @param {...(string|string[])} [methodNames] The object method names to bind,
+     *  specified as individual method names or arrays of method names.
      * @returns {Object} Returns `object`.
      * @example
      *
@@ -4817,12 +5025,26 @@
      * // => logs 'clicked docs', when the button is clicked
      */
     function bindAll(object) {
-      var funcs = arguments.length > 1 ? baseFlatten(arguments, true, false, 1) : functions(object),
-          index = -1,
-          length = funcs.length;
+      return baseBindAll(object, arguments.length > 1
+        ? baseFlatten(arguments, true, false, 1)
+        : functions(object));
+    }
+
+    /**
+     * The base implementation of `_.bindAll` without support for individual
+     * method name arguments.
+     *
+     * @private
+     * @param {Object} object The object to bind and assign the bound methods to.
+     * @param {string[]} methodNames The object method names to bind.
+     * @returns {Object} Returns `object`.
+     */
+    function baseBindAll(object, methodNames) {
+      var index = -1,
+          length = methodNames.length;
 
       while (++index < length) {
-        var key = funcs[index];
+        var key = methodNames[index];
         object[key] = createWrapper(object[key], BIND_FLAG, null, object);
       }
       return object;
@@ -4841,7 +5063,7 @@
      * @category Functions
      * @param {Object} object The object the method belongs to.
      * @param {string} key The key of the method.
-     * @param {...*} [args] Arguments to be partially applied.
+     * @param {...*} [args] The arguments to be partially applied.
      * @returns {Function} Returns the new bound function.
      * @example
      *
@@ -5105,7 +5327,7 @@
      * @memberOf _
      * @category Functions
      * @param {Function} func The function to defer.
-     * @param {...*} [args] Arguments to invoke the function with.
+     * @param {...*} [args] The arguments to invoke the function with.
      * @returns {number} Returns the timer id.
      * @example
      *
@@ -5129,7 +5351,7 @@
      * @category Functions
      * @param {Function} func The function to delay.
      * @param {number} wait The number of milliseconds to delay execution.
-     * @param {...*} [args] Arguments to invoke the function with.
+     * @param {...*} [args] The arguments to invoke the function with.
      * @returns {number} Returns the timer id.
      * @example
      *
@@ -5274,7 +5496,7 @@
      * @memberOf _
      * @category Functions
      * @param {Function} func The function to partially apply arguments to.
-     * @param {...*} [args] Arguments to be partially applied.
+     * @param {...*} [args] The arguments to be partially applied.
      * @returns {Function} Returns the new partially applied function.
      * @example
      *
@@ -5304,7 +5526,7 @@
      * @memberOf _
      * @category Functions
      * @param {Function} func The function to partially apply arguments to.
-     * @param {...*} [args] Arguments to be partially applied.
+     * @param {...*} [args] The arguments to be partially applied.
      * @returns {Function} Returns the new partially applied function.
      * @example
      *
@@ -5410,8 +5632,8 @@
      * Assigns own enumerable properties of source object(s) to the destination
      * object. Subsequent sources will overwrite property assignments of previous
      * sources. If a callback is provided it will be executed to produce the
-     * assigned values. The callback is bound to `thisArg` and invoked with two
-     * arguments; (objectValue, sourceValue).
+     * assigned values. The callback is bound to `thisArg` and invoked with
+     * five arguments; (objectValue, sourceValue, key, object, source).
      *
      * @static
      * @memberOf _
@@ -5434,45 +5656,14 @@
      * defaults({ 'name': 'barney' }, { 'name': 'fred', 'employer': 'slate' });
      * // => { 'name': 'barney', 'employer': 'slate' }
      */
-    function assign(object, source, guard) {
-      var args = arguments;
-      if (!object || args.length < 2) {
-        return object;
-      }
-      var argsIndex = 0,
-          argsLength = args.length,
-          type = typeof guard;
-
-      // enables use as a callback for functions like `_.reduce`
-      if ((type == 'number' || type == 'string') && args[3] && args[3][guard] === source) {
-        argsLength = 2;
-      }
-      // juggle arguments
-      if (argsLength > 3 && typeof args[argsLength - 2] == 'function') {
-        var callback = baseCreateCallback(args[--argsLength - 1], args[argsLength--], 2);
-      } else if (argsLength > 2 && typeof args[argsLength - 1] == 'function') {
-        callback = args[--argsLength];
-      }
-      while (++argsIndex < argsLength) {
-        source = args[argsIndex];
-        var index = -1,
-            props = keys(source),
-            length = props.length;
-
-        while (++index < length) {
-          var key = props[index];
-          object[key] = callback ? callback(object[key], source[key]) : source[key];
-        }
-      }
-      return object;
-    }
+    var assign = createAssigner(baseAssign);
 
     /**
      * Creates a clone of `value`. If `isDeep` is `true` nested objects will also
      * be cloned, otherwise they will be assigned by reference. If a callback
      * is provided it will be executed to produce the cloned values. If the
      * callback returns `undefined` cloning will be handled by the method instead.
-     * The callback is bound to `thisArg` and invoked with one argument; (value).
+     * The callback is bound to `thisArg` and invoked with two argument; (value, index|key).
      *
      * Note: This method is loosely based on the structured clone algorithm. Functions
      * and DOM nodes are **not** cloned. The enumerable properties of `arguments` objects and
@@ -5535,7 +5726,7 @@
      * Creates a deep clone of `value`. If a callback is provided it will be
      * executed to produce the cloned values. If the callback returns `undefined`
      * cloning will be handled by the method instead. The callback is bound to
-     * `thisArg` and invoked with one argument; (value).
+     * `thisArg` and invoked with two argument; (value, index|key).
      *
      * Note: This method is loosely based on the structured clone algorithm. Functions
      * and DOM nodes are **not** cloned. The enumerable properties of `arguments` objects and
@@ -5611,7 +5802,7 @@
      */
     function create(prototype, properties) {
       var result = baseCreate(prototype);
-      return properties ? assign(result, properties) : result;
+      return properties ? baseAssign(result, properties) : result;
     }
 
     /**
@@ -5763,7 +5954,9 @@
      * // => logs 'x', 'y', and 'z' (property order is not guaranteed across environments)
      */
     function forIn(object, callback, thisArg) {
-      callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
+      if (typeof callback != 'function' || typeof thisArg != 'undefined') {
+        callback = baseCreateCallback(callback, thisArg, 3);
+      }
       return baseFor(object, callback, keysIn);
     }
 
@@ -5818,7 +6011,9 @@
      * // => logs '0', '1', and 'length' (property order is not guaranteed across environments)
      */
     function forOwn(object, callback, thisArg) {
-      callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
+      if (typeof callback != 'function' || typeof thisArg != 'undefined') {
+        callback = baseCreateCallback(callback, thisArg, 3);
+      }
       return baseForOwn(object, callback);
     }
 
@@ -6082,7 +6277,8 @@
         return !length;
       }
       baseForOwn(value, function() {
-        return (result = false);
+        result = false;
+        return result;
       });
       return result;
     }
@@ -6092,7 +6288,7 @@
      * equivalent. If a callback is provided it will be executed to compare
      * values. If the callback returns `undefined` comparisons will be handled
      * by the method instead. The callback is bound to `thisArg` and invoked
-     * with two arguments; (value, other).
+     * with three arguments; (value, other, key).
      *
      * Note: This method supports comparing arrays, booleans, `Date` objects,
      * numbers, `Object` objects, regexes, and strings. Functions and DOM nodes
@@ -6218,13 +6414,17 @@
      * // => false
      */
     function isFunction(value) {
-      return typeof value == 'function';
+      // avoid a Chakra bug in IE 11
+      // https://github.com/jashkenas/underscore/issues/1621
+      return typeof value == 'function' || false;
     }
 
     /**
      * Checks if `value` is the language type of `Object`.
      * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
      *
+     * Note: See the [ES5 spec](http://es5.github.io/#x8) for more details.
+     *
      * @static
      * @memberOf _
      * @category Objects
@@ -6242,9 +6442,7 @@
      * // => false
      */
     function isObject(value) {
-      // check if the value is the ECMAScript language type of `Object`
-      // http://es5.github.io/#x8
-      // and avoid a V8 bug
+      // avoid a V8 bug in Chrome 19-20
       // https://code.google.com/p/v8/issues/detail?id=2291
       var type = typeof value;
       return type == 'function' || (value && type == 'object') || false;
@@ -6566,7 +6764,7 @@
      * provided it will be executed to produce the merged values of the destination
      * and source properties. If the callback returns `undefined` merging will
      * be handled by the method instead. The callback is bound to `thisArg` and
-     * invoked with two arguments; (objectValue, sourceValue).
+     * invoked with five arguments; (objectValue, sourceValue, key, object, source).
      *
      * @static
      * @memberOf _
@@ -6610,34 +6808,7 @@
      * });
      * // => { 'fruits': ['apple', 'banana'], 'vegetables': ['beet', 'carrot] }
      */
-    function merge(object, source, guard) {
-      var args = arguments,
-          length = args.length,
-          type = typeof guard;
-
-      if (!object || length < 2) {
-        return object;
-      }
-      // enables use as a callback for functions like `_.reduce`
-      if ((type == 'number' || type == 'string') && args[3] && args[3][guard] === source) {
-        length = 2;
-      }
-      // juggle arguments
-      if (length > 3 && typeof args[length - 2] == 'function') {
-        var callback = baseCreateCallback(args[--length - 1], args[length--], 2);
-      } else if (length > 2 && typeof args[length - 1] == 'function') {
-        callback = args[--length];
-      }
-      var sources = slice(args, 1, length),
-          index = -1,
-          stackA = [],
-          stackB = [];
-
-      while (++index < length) {
-        baseMerge(object, sources[index], callback, stackA, stackB);
-      }
-      return object;
-    }
+    var merge = createAssigner(baseMerge);
 
     /**
      * Creates a shallow clone of `object` excluding the specified properties.
@@ -6667,9 +6838,11 @@
      * // => { 'name': 'fred' }
      */
     function omit(object, predicate, thisArg) {
+      if (!isObject(object)) {
+        return {};
+      }
       if (typeof predicate == 'function') {
-        predicate = lodash.createCallback(predicate, thisArg, 3);
-        return pick(object, negate(predicate));
+        return basePick(object, negate(lodash.createCallback(predicate, thisArg, 3)));
       }
       var omitProps = baseFlatten(arguments, true, false, 1),
           length = omitProps.length;
@@ -6677,7 +6850,7 @@
       while (length--) {
         omitProps[length] = String(omitProps[length]);
       }
-      return pick(object, baseDifference(keysIn(object), omitProps));
+      return basePick(object, baseDifference(keysIn(object), omitProps));
     }
 
     /**
@@ -6735,28 +6908,12 @@
      * // => { 'name': 'fred' }
      */
     function pick(object, predicate, thisArg) {
-      var result = {};
-
-      if (typeof predicate != 'function') {
-        var index = -1,
-            props = baseFlatten(arguments, true, false, 1),
-            length = isObject(object) ? props.length : 0;
-
-        while (++index < length) {
-          var key = props[index];
-          if (key in object) {
-            result[key] = object[key];
-          }
-        }
-      } else {
-        predicate = lodash.createCallback(predicate, thisArg, 3);
-        baseForIn(object, function(value, key, object) {
-          if (predicate(value, key, object)) {
-            result[key] = value;
-          }
-        });
+      if (!isObject(object)) {
+        return {};
       }
-      return result;
+      return basePick(object, typeof predicate == 'function'
+        ? lodash.createCallback(predicate, thisArg, 3)
+        : baseFlatten(arguments, true, false, 1));
     }
 
     /**
@@ -7204,7 +7361,7 @@
      * settings object is provided it will override `_.templateSettings` for the
      * template.
      *
-     * Note: In the development build, `_.template` utilizes `sourceURL`s for easier debugging.
+     * Note: In the development build, `_.template` utilizes sourceURLs for easier debugging.
      * See the [HTML5 Rocks article on sourcemaps](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
      * for more details.
      *
@@ -7222,9 +7379,9 @@
      * @param {Object} [options] The options object.
      * @param {RegExp} [options.escape] The HTML "escape" delimiter.
      * @param {RegExp} [options.evaluate] The "evaluate" delimiter.
-     * @param {Object} [options.imports] An object to import into the template as local variables.
+     * @param {Object} [options.imports] An object to import into the template as free variables.
      * @param {RegExp} [options.interpolate] The "interpolate" delimiter.
-     * @param {string} [options.sourceURL] The `sourceURL` of the template's compiled source.
+     * @param {string} [options.sourceURL] The sourceURL of the template's compiled source.
      * @param {string} [options.variable] The data object variable name.
      * @returns {Function|string} Returns the interpolated string if a data object
      *  is provided, else the compiled template function.
@@ -7262,7 +7419,7 @@
      * _.template(list, { 'people': ['fred', 'barney'] }, { 'imports': { 'jq': jQuery } });
      * // => '<li>fred</li><li>barney</li>'
      *
-     * // using the `sourceURL` option to specify a custom `sourceURL` for the template
+     * // using the `sourceURL` option to specify a custom sourceURL for the template
      * var compiled = _.template('hello <%= name %>', null, { 'sourceURL': '/basic/greeting.jst' });
      * compiled(data);
      * // => find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector
@@ -7290,10 +7447,10 @@
       // and Laura Doktorova's doT.js
       // https://github.com/olado/doT
       var settings = lodash.templateSettings;
-      options = defaults({}, options, settings);
+      options = assign({}, options, settings, assignOwnDefaults);
       string = String(string == null ? '' : string);
 
-      var imports = defaults({}, options.imports, settings.imports),
+      var imports = assign({}, options.imports, settings.imports, assignOwnDefaults),
           importsKeys = keys(imports),
           importsValues = values(imports);
 
@@ -7368,24 +7525,12 @@
         source +
         'return __p\n}';
 
-      // Use a `sourceURL` for easier debugging.
+      // use a sourceURL for easier debugging
       // http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl
-      var sourceURL = '\n/*\n//# sourceURL=' + (options.sourceURL || '/lodash/template/source[' + (templateCounter++) + ']') + '\n*/';
+      var sourceURL = options.sourceURL || ('/lodash/template/source[' + (templateCounter++) + ']'),
+          result = compileFunction(source, importsKeys, importsValues, sourceURL);
 
-      try {
-        var result = Function(importsKeys, 'return ' + source + sourceURL).apply(undefined, importsValues);
-      } catch(e) {
-        e.source = source;
-        throw e;
-      }
-      if (data) {
-        return result(data);
-      }
-      // provide the compiled function's source by its `toString` method, in
-      // supported environments, or the `source` property as a convenience for
-      // inlining compiled templates during the build process
-      result.source = source;
-      return result;
+      return data ? result(data) : result;
     }
 
     /**
@@ -7636,10 +7781,14 @@
      * // => [{ 'name': 'fred', 'age': 40 }]
      */
     function createCallback(func, thisArg, argCount) {
-      var type = typeof func;
-      if (type == 'function' || func == null) {
-        return (typeof thisArg == 'undefined' || !(func && 'prototype' in func)) &&
-          func || baseCreateCallback(func, thisArg, argCount);
+      var type = typeof func,
+          isFunc = type == 'function';
+
+      if (isFunc && (typeof thisArg == 'undefined' || !('prototype' in func))) {
+        return func;
+      }
+      if (isFunc || func == null) {
+        return baseCreateCallback(func, thisArg, argCount);
       }
       // handle "_.pluck" and "_.where" style callback shorthands
       return type == 'object' ? matches(func) : property(func);
@@ -7711,15 +7860,14 @@
         if (length && !object) {
           return false;
         }
-        var result = true;
         while (length--) {
           var key = props[length];
-          if (!(result = hasOwnProperty.call(object, key) &&
-              baseIsEqual(object[key], source[key], null, true))) {
-            break;
+          if (!(hasOwnProperty.call(object, key) &&
+                baseIsEqual(object[key], source[key], null, true))) {
+            return false;
           }
         }
-        return result;
+        return true;
       };
     }
 
@@ -8082,7 +8230,7 @@
      * @returns {Array} Returns the array of results.
      * @example
      *
-     * var diceRolls = _.times(3, _.partial(_.random, 1, 6));
+     * var diceRolls = _.times(3, _.partial(_.random, 1, 6, false));
      * // => [3, 6, 4]
      *
      * _.times(3, function(n) { mage.castSpell(n); });
@@ -8225,7 +8373,7 @@
     lodash.unzip = zip;
 
     // add functions to `lodash.prototype`
-    mixin(lodash, assign({}, lodash));
+    mixin(lodash, baseAssign({}, lodash));
 
     /*--------------------------------------------------------------------------*/
 
@@ -8305,7 +8453,7 @@
     lodash.inject = reduce;
 
     mixin(lodash, (function() {
-      var source = {}
+      var source = {};
       baseForOwn(lodash, function(func, methodName) {
         if (!lodash.prototype[methodName]) {
           source[methodName] = func;
@@ -8329,9 +8477,9 @@
     lodash.head = first;
 
     baseForOwn(lodash, function(func, methodName) {
-      var callbackable = methodName !== 'sample';
+      var callbackable = methodName != 'sample';
       if (!lodash.prototype[methodName]) {
-        lodash.prototype[methodName]= function(n, guard) {
+        lodash.prototype[methodName] = function(n, guard) {
           var chainAll = this.__chain__,
               result = func(this.__wrapped__, n, guard);
 
@@ -8362,7 +8510,7 @@
 
     // add `Array` functions that return unwrapped values
     arrayEach(['join', 'pop', 'shift'], function(methodName) {
-      var func = arrayRef[methodName];
+      var func = arrayProto[methodName];
       lodash.prototype[methodName] = function() {
         var chainAll = this.__chain__,
             result = func.apply(this.__wrapped__, arguments);
@@ -8375,7 +8523,7 @@
 
     // add `Array` functions that return the existing wrapped value
     arrayEach(['push', 'reverse', 'sort', 'unshift'], function(methodName) {
-      var func = arrayRef[methodName];
+      var func = arrayProto[methodName];
       lodash.prototype[methodName] = function() {
         func.apply(this.__wrapped__, arguments);
         return this;
@@ -8384,7 +8532,7 @@
 
     // add `Array` functions that return new wrapped values
     arrayEach(['concat', 'splice'], function(methodName) {
-      var func = arrayRef[methodName];
+      var func = arrayProto[methodName];
       lodash.prototype[methodName] = function() {
         return new lodashWrapper(func.apply(this.__wrapped__, arguments), this.__chain__);
       };
diff --git a/dist/lodash.min.js b/dist/lodash.min.js
index f77af7c97..e2ba8d833 100644
--- a/dist/lodash.min.js
+++ b/dist/lodash.min.js
@@ -3,64 +3,65 @@
  * Lo-Dash 2.4.1 (Custom Build) lodash.com/license | Underscore.js 1.6.0 underscorejs.org/LICENSE
  * Build: `lodash modern -o ./dist/lodash.js`
  */
-;(function(){function n(n,t){return typeof n=="undefined"?t:n}function t(n,t){for(var r=-1,e=t.length,u=Array(e);++r<e;)u[r]=n[t[r]];return u}function r(n,t){if(n!==t){if(n>t||typeof n=="undefined")return 1;if(n<t||typeof t=="undefined")return-1}return 0}function e(n,t,r){r=(r||0)-1;for(var e=n?n.length:0;++r<e;)if(n[r]===t)return r;return-1}function u(n,t){return n.has(t)?0:-1}function o(n){return n.charCodeAt(0)}function i(n,t){for(var r=-1,e=n.length;++r<e&&0<=t.indexOf(n.charAt(r)););return r}function a(n,t){for(var r=n.length;r--&&0<=t.indexOf(n.charAt(r)););return r
-}function f(n,t){return r(n.a,t.a)||n.b-t.b}function l(n,t){for(var e=-1,u=n.a,o=t.a,i=u.length;++e<i;){var a=r(u[e],o[e]);if(a)return a}return n.b-t.b}function c(n){return function(t){for(var r=-1,e=(t=null!=t&&(t+"").replace(U,p).match(V))?t.length:0,u="";++r<e;)u=n(u,t[r],r,t);return u}}function p(n){return pt[n]}function s(n){return lt[n]}function h(n){return"\\"+ht[n]}function g(n){for(var t=-1,r=n.length;++t<r;){var e=n.charCodeAt(t);if((160<e||9>e||13<e)&&32!=e&&160!=e&&5760!=e&&6158!=e&&(8192>e||8202<e&&8232!=e&&8233!=e&&8239!=e&&8287!=e&&12288!=e&&65279!=e))break
-}return t}function v(n){for(var t=n.length;t--;){var r=n.charCodeAt(t);if((160<r||9>r||13<r)&&32!=r&&160!=r&&5760!=r&&6158!=r&&(8192>r||8202<r&&8232!=r&&8233!=r&&8239!=r&&8287!=r&&12288!=r&&65279!=r))break}return t}function y(n){return ct[n]}function m(p){function U(n){return n&&typeof n=="object"&&!We(n)&&fe.call(n,"__wrapped__")?n:new V(n)}function V(n,t){this.__chain__=!!t,this.__wrapped__=n}function lt(n,t){for(var r=-1,e=n?n.length:0;++r<e&&false!==t(n[r],r,n););return n}function ct(n,t){for(var r=-1,e=n?n.length>>>0:0,u=Lr(e);++r<e;)u[r]=t(n[r],r,n);
-return u}function pt(n){function t(){if(u){for(var n=-1,i=arguments.length,a=Lr(i);++n<i;)a[n]=arguments[n];a=Ft(u,o,a)}return this instanceof t?(n=ht(r.prototype),a=r.apply(n,a||arguments),kr(a)?a:n):r.apply(e,a||arguments)}var r=n[0],e=n[3],u=n[4],o=n[6];return Re(t,n),t}function st(n,t,r,e,u){if(r){var o=r(n);if(typeof o!="undefined")return o}if(!kr(n))return n;var i=te.call(n);if(!it[i])return n;var a=Oe[i];switch(i){case H:case Q:return new a(+n);case rt:case ot:return new a(n);case ut:return o=a(n.source,L.exec(n)),o.lastIndex=n.lastIndex,o
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+},U.isFinite=function(n){return jr(n)&&!xr(parseFloat(n))},U.isFunction=Ae,U.isNaN=function(n){return Ee(n)&&n!=+n},U.isNull=function(n){return null===n},U.isNumber=Ee,U.isObject=Oe,U.isPlainObject=Br,U.isRegExp=Ie,U.isString=Re,U.isUndefined=function(n){return typeof n=="undefined"},U.kebabCase=Pr,U.lastIndexOf=function(n,t,e){var r=n?n.length:0;for(typeof e=="number"&&(r=(0>e?Cr(r+e,0):Ar(e||0,r-1))+1);r--;)if(n[r]===t)return r;return-1},U.noConflict=function(){return c._=er,this},U.noop=Be,U.now=Mr,U.pad=function(n,t,e){n=null==n?"":Ye(n),t=+t;
+var r=n.length;return r<t&&jr(t)?(r=(t-r)/2,t=fr(r),r=ir(r),e=qt("",r,e),e.slice(0,t)+n+e):n},U.padLeft=function(n,t,e){return n=null==n?"":Ye(n),qt(n,t,e)+n},U.padRight=function(n,t,e){return n=null==n?"":Ye(n),n+qt(n,t,e)},U.parseInt=Vr,U.random=function(n,t,e){var r=null==n,u=null==t;return null==e&&(u&&typeof n=="boolean"?(e=n,n=1):typeof t=="boolean"&&(e=t,u=true)),r&&u&&(t=1,u=false),n=+n||0,u?(t=n,n=0):t=+t||0,e||n%1||t%1?(e=Ir(),Ar(n+e*(t-n+parseFloat("1e-"+(Ye(e).length-1))),t)):Wt(n,t)},U.reduce=ye,U.reduceRight=me,U.repeat=Fe,U.result=function(n,t,e){var r=null==n?m:n[t];
+return typeof r=="undefined"?e:Ae(r)?n[t]():r},U.runInContext=y,U.size=function(n){var t=n?n.length:0;return typeof t=="number"&&-1<t&&t<=rr?t:Ur(n).length},U.some=be,U.sortedIndex=ee,U.snakeCase=Kr,U.startsWith=function(n,t,e){return n=null==n?"":Ye(n),e=typeof e=="undefined"?0:Ar(0>e?0:+e||0,n.length),n.lastIndexOf(t,e)==e},U.template=function(n,t,e){var r=U.templateSettings;e=Dr({},e,r,pt),n=Ye(null==n?"":n);var u,o,i=Dr({},e.imports,r.imports,pt),r=Ur(i),i=Se(i),a=0,f=e.interpolate||q,l="__p+='",f=Xe((e.escape||q).source+"|"+f.source+"|"+(f===$?L:q).source+"|"+(e.evaluate||q).source+"|$","g");
+return n.replace(f,function(t,e,r,i,f,c){return r||(r=i),l+=n.slice(a,c).replace(K,s),e&&(u=true,l+="'+__e("+e+")+'"),f&&(o=true,l+="';"+f+";\n__p+='"),r&&(l+="'+((__t=("+r+"))==null?'':__t)+'"),a=c+t.length,t}),l+="';",(e=e.variable)||(l="with(obj){"+l+"}"),l=(o?l.replace(I,""):l).replace(R,"$1").replace(N,"$1;"),l="function("+(e||"obj")+"){"+(e?"":"obj||(obj={});")+"var __t,__p=''"+(u?",__e=_.escape":"")+(o?",__j=Array.prototype.join;function print(){__p+=__j.call(arguments,'')}":";")+l+"return __p}",e=Dt(l,r,i,void 0),t?e(t):e
+},U.trim=We,U.trimLeft=function(n,t){return(n=null==n?"":Ye(n))?null==t?n.slice(h(n)):(t=Ye(t),n.slice(o(n,t))):n},U.trimRight=function(n,t){return(n=null==n?"":Ye(n))?null==t?n.slice(0,g(n)+1):(t=Ye(t),n.slice(0,i(n,t)+1)):n},U.truncate=function(n,t){var e=30,r="...";if(t&&Oe(t))var u="separator"in t?t.separator:u,e="length"in t?+t.length||0:e,r="omission"in t?Ye(t.omission):r;else null!=t&&(e=+t||0);if(n=null==n?"":Ye(n),e>=n.length)return n;var o=e-r.length;if(1>o)return r;if(e=n.slice(0,o),null==u)return e+r;
+if(Ie(u)){if(n.slice(o).search(u)){var i,a,f=n.slice(0,o);for(u.global||(u=Xe(u.source,(D.exec(u)||"")+"g")),u.lastIndex=0;i=u.exec(f);)a=i.index;e=e.slice(0,null==a?o:a)}}else n.indexOf(u,o)!=o&&(u=e.lastIndexOf(u),-1<u&&(e=e.slice(0,u)));return e+r},U.unescape=function(n){return null==n?"":(n=Ye(n),0>n.indexOf(";")?n:n.replace(S,v))},U.uniqueId=function(n){var t=++O;return Ye(null==n?"":n)+t},U.all=fe,U.any=be,U.detect=ce,U.foldl=ye,U.foldr=me,U.include=ae,U.inject=ye,ze(U,function(){var n={};return Et(U,function(t,e){U.prototype[e]||(n[e]=t)
+}),n}(),false),U.first=Yt,U.last=Qt,U.sample=function(n,t,e){return n&&typeof n.length!="number"&&(n=Se(n)),null==t||e?(t=n?n.length:0,0<t?n[Wt(0,t-1)]:m):(n=de(n),n.length=Ar(0>t?0:+t||0,n.length),n)},U.take=Yt,U.takeRight=Qt,U.takeRightWhile=Qt,U.takeWhile=Yt,U.head=Yt,Et(U,function(n,t){var e="sample"!=t;U.prototype[t]||(U.prototype[t]=function(t,r){var u=this.__chain__,o=n(this.__wrapped__,t,r);return u||null!=t&&(!r||e&&typeof t=="function")?new M(o,u):o})}),U.VERSION=k,U.prototype.chain=function(){return this.__chain__=true,this
+},U.prototype.toJSON=ie,U.prototype.toString=function(){return Ye(this.__wrapped__)},U.prototype.value=ie,U.prototype.valueOf=ie,ft(["join","pop","shift"],function(n){var t=He[n];U.prototype[n]=function(){var n=this.__chain__,e=t.apply(this.__wrapped__,arguments);return n?new M(e,n):e}}),ft(["push","reverse","sort","unshift"],function(n){var t=He[n];U.prototype[n]=function(){return t.apply(this.__wrapped__,arguments),this}}),ft(["concat","splice"],function(n){var t=He[n];U.prototype[n]=function(){return new M(t.apply(this.__wrapped__,arguments),this.__chain__)
+}}),U}var m,d=1,b=2,_=4,w=8,j=16,x=32,k="2.4.1",C="__lodash@"+k+"__",A="Expected a function",O=0,E=/^[A-Z]+$/,I=/\b__p\+='';/g,R=/\b(__p\+=)''\+/g,N=/(__e\(.*?\)|\b__t\))\+'';/g,S=/&(?:amp|lt|gt|quot|#39);/g,T=/[&<>"']/g,F=/<%-([\s\S]+?)%>/g,W=/<%([\s\S]+?)%>/g,$=/<%=([\s\S]+?)%>/g,L=/\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g,D=/\w*$/,z=/^\s*function[ \n\r\t]+\w/,B=/^0[xX]/,U=/[\xC0-\xFF]/g,q=/($^)/,Z=/[.*+?^${}()|[\]\/\\]/g,P=/\bthis\b/,K=/['\n\r\u2028\u2029\\]/g,M=/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g,V=" \t\x0B\f\xa0\ufeff\n\r\u2028\u2029\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000",J="Array Boolean Date Function Math Number Object RegExp Set String _ clearTimeout document isFinite isNaN parseInt setTimeout TypeError window WinRTError".split(" "),X="[object Arguments]",Y="[object Array]",G="[object Boolean]",H="[object Date]",Q="[object Error]",nt="[object Function]",tt="[object Number]",et="[object Object]",rt="[object RegExp]",ut="[object String]",ot={};
+ot[nt]=false,ot[X]=ot[Y]=ot[G]=ot[H]=ot[tt]=ot[et]=ot[rt]=ot[ut]=true;var it={leading:false,maxWait:0,trailing:false},at={configurable:false,enumerable:false,value:null,writable:false},ft={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;"},lt={"&amp;":"&","&lt;":"<","&gt;":">","&quot;":'"',"&#39;":"'"},ct={\u00c0:"A",\u00c1:"A",\u00c2:"A",\u00c3:"A",\u00c4:"A",\u00c5:"A",\u00e0:"a",\u00e1:"a",\u00e2:"a",\u00e3:"a",\u00e4:"a",\u00e5:"a",\u00c7:"C",\u00e7:"c",\u00d0:"D",\u00f0:"d",\u00c8:"E",\u00c9:"E",\u00ca:"E",\u00cb:"E",\u00e8:"e",\u00e9:"e",\u00ea:"e",\u00eb:"e",\u00cc:"I",\u00cd:"I",\u00ce:"I",\u00cf:"I",\u00ec:"i",\u00ed:"i",\u00ee:"i",\u00ef:"i",\u00d1:"N",\u00f1:"n",\u00d2:"O",\u00d3:"O",\u00d4:"O",\u00d5:"O",\u00d6:"O",\u00d8:"O",\u00f2:"o",\u00f3:"o",\u00f4:"o",\u00f5:"o",\u00f6:"o",\u00f8:"o",\u00d9:"U",\u00da:"U",\u00db:"U",\u00dc:"U",\u00f9:"u",\u00fa:"u",\u00fb:"u",\u00fc:"u",\u00dd:"Y",\u00fd:"y",\u00ff:"y",\u00c6:"AE",\u00e6:"ae",\u00de:"Th",\u00fe:"th",\u00df:"ss","\xd7":" ","\xf7":" "},pt={"function":true,object:true},st={"\\":"\\","'":"'","\n":"n","\r":"r","\u2028":"u2028","\u2029":"u2029"},ht=pt[typeof window]&&window||this,gt=pt[typeof exports]&&exports&&!exports.nodeType&&exports,pt=pt[typeof module]&&module&&!module.nodeType&&module,vt=gt&&pt&&typeof global=="object"&&global;
+!vt||vt.global!==vt&&vt.window!==vt&&vt.self!==vt||(ht=vt);var vt=pt&&pt.exports===gt&&gt,yt=y();typeof define=="function"&&typeof define.amd=="object"&&define.amd?(ht._=yt, define(function(){return yt})):gt&&pt?vt?(pt.exports=yt)._=yt:gt._=yt:ht._=yt}).call(this);
\ No newline at end of file
diff --git a/dist/lodash.underscore.js b/dist/lodash.underscore.js
index 4bda279f3..bdc0aa335 100644
--- a/dist/lodash.underscore.js
+++ b/dist/lodash.underscore.js
@@ -222,7 +222,7 @@
   /*--------------------------------------------------------------------------*/
 
   /** Used for native method references */
-  var arrayRef = Array.prototype,
+  var arrayProto = Array.prototype,
       objectProto = Object.prototype;
 
   /** Used to restore the original `_` reference in `_.noConflict` */
@@ -249,9 +249,9 @@
       floor = Math.floor,
       fnToString = Function.prototype.toString,
       hasOwnProperty = objectProto.hasOwnProperty,
-      push = arrayRef.push,
+      push = arrayProto.push,
       propertyIsEnumerable = objectProto.propertyIsEnumerable,
-      splice = arrayRef.splice;
+      splice = arrayProto.splice;
 
   /* Native method shortcuts for methods with the same name as other `lodash` methods */
   var nativeCreate = isNative(nativeCreate = Object.create) && nativeCreate,
@@ -470,6 +470,31 @@
     return result;
   }
 
+  /**
+   * The base implementation of `_.assign` without support for argument juggling,
+   * multiple sources, and `this` binding.
+   *
+   * @private
+   * @param {Object} object The destination object.
+   * @param {Object} source The source object.
+   * @param {Function} [callback] The function to customize assigning values.
+   * @returns {Object} Returns the destination object.
+   */
+  function baseAssign(object, source, callback) {
+    if (!object) {
+      return object;
+    }
+    var index = -1,
+        props = keys(source),
+        length = props.length;
+
+    while (++index < length) {
+      var key = props[index];
+      object[key] = callback ? callback(object[key], source[key], key, object, source) : source[key];
+    }
+    return object;
+  }
+
   /**
    * The base implementation of `_.create` without support for assigning
    * properties to the created object.
@@ -498,7 +523,7 @@
 
   /**
    * The base implementation of `_.createCallback` without support for creating
-   * "_.pluck" or "_.where" style callbacks.
+   * "_.pluck" and "_.where" style callbacks.
    *
    * @private
    * @param {*} [func=identity] The value to convert to a callback.
@@ -555,11 +580,11 @@
         key = func;
 
     function bound() {
-      var index = -1,
-          length = arguments.length,
+      var length = arguments.length,
+          index = length,
           args = Array(length);
 
-      while (++index < length) {
+      while (index--) {
         args[index] = arguments[index];
       }
       if (partialArgs) {
@@ -605,7 +630,7 @@
 
   /**
    * The base implementation of `_.forEach` without support for callback
-   * shorthands or `this` binding.
+   * shorthands and `this` binding.
    *
    * @private
    * @param {Array|Object|string} collection The collection to iterate over.
@@ -631,7 +656,7 @@
 
   /**
    * The base implementation of `_.forEachRight` without support for callback
-   * shorthands or `this` binding.
+   * shorthands and `this` binding.
    *
    * @private
    * @param {Array|Object|string} collection The collection to iterate over.
@@ -655,8 +680,8 @@
   }
 
   /**
-   * The base implementation of `_.find`, `_.findLast`, `_.findKey`, and `_.findLastKey`
-   * without support for callback shorthands or `this` binding which iterates
+   * The base implementation of `_.find`, `_.findLast`, `_.findKey`, and `_.findLastKey`,
+   * without support for callback shorthands and `this` binding, which iterates
    * over `collection` using the provided `eachFunc`.
    *
    * @private
@@ -681,7 +706,7 @@
 
   /**
    * The base implementation of `_.flatten` without support for callback
-   * shorthands or `this` binding.
+   * shorthands and `this` binding.
    *
    * @private
    * @param {Array} array The array to flatten.
@@ -770,7 +795,7 @@
 
   /**
    * The base implementation of `_.forIn` without support for callback
-   * shorthands or `this` binding.
+   * shorthands and `this` binding.
    *
    * @private
    * @param {Object} object The object to iterate over.
@@ -783,7 +808,7 @@
 
   /**
    * The base implementation of `_.forOwn` without support for callback
-   * shorthands or `this` binding.
+   * shorthands and `this` binding.
    *
    * @private
    * @param {Object} object The object to iterate over.
@@ -796,7 +821,7 @@
 
   /**
    * The base implementation of `_.forOwnRight` without support for callback
-   * shorthands or `this` binding.
+   * shorthands and `this` binding.
    *
    * @private
    * @param {Object} object The object to iterate over.
@@ -833,7 +858,7 @@
 
   /**
    * The base implementation of `_.isEqual`, without support for `thisArg`
-   * binding, that allows partial "_.where" style comparisons.
+   * binding, which allows partial "_.where" style comparisons.
    *
    * @private
    * @param {*} value The value to compare to `other`.
@@ -956,8 +981,66 @@
   }
 
   /**
-   * The base implementation of `_.random` without argument juggling or support
-   * for returning floating-point numbers.
+   * The base implementation of `_.invoke` which requires additional arguments
+   * be provided as an array of arguments rather than individually.
+   *
+   * @private
+   * @param {Array|Object|string} collection The collection to iterate over.
+   * @param {Function|string} methodName The name of the method to invoke or
+   *  the function invoked per iteration.
+   * @param {Array} [args] The arguments to invoke the method with.
+   * @returns {Array} Returns the array of results.
+   */
+  function baseInvoke(collection, methodName, args) {
+    var index = -1,
+        isFunc = typeof methodName == 'function',
+        length = collection && collection.length,
+        result = Array(length < 0 ? 0 : length >>> 0);
+
+    baseEach(collection, function(value) {
+      var func = isFunc ? methodName : (value != null && value[methodName]);
+      result[++index] = func ? func.apply(value, args) : undefined;
+    });
+    return result;
+  }
+
+  /**
+   * The base implementation of `_.pick` without support for `this` binding
+   * and individual property name arguments.
+   *
+   * @private
+   * @param {Object} object The source object.
+   * @param {Function|string[]} predicate The function called per iteration or
+   *  property names to pick.
+   * @returns {Object} Returns the new object.
+   */
+  function basePick(object, predicate) {
+    var result = {};
+
+    if (typeof predicate == 'function') {
+      baseForIn(object, function(value, key, object) {
+        if (predicate(value, key, object)) {
+          result[key] = value;
+        }
+      });
+      return result;
+    }
+    var index = -1,
+        props = predicate,
+        length = props.length;
+
+    while (++index < length) {
+      var key = props[index];
+      if (key in object) {
+        result[key] = object[key];
+      }
+    }
+    return result;
+  }
+
+  /**
+   * The base implementation of `_.random` without support for argument juggling
+   * and returning floating-point numbers.
    *
    * @private
    * @param {number} min The minimum possible value.
@@ -970,7 +1053,7 @@
 
   /**
    * The base implementation of `_.uniq` without support for callback shorthands
-   * or `this` binding.
+   * and `this` binding.
    *
    * @private
    * @param {Array} array The array to process.
@@ -1030,6 +1113,32 @@
     return result;
   }
 
+  /**
+   * Compiles a function from `source` using the `varNames` and `varValues`
+   * pairs to import free variables into the compiled function. If `sourceURL`
+   * is provided it will be used as the sourceURL for the compiled function.
+   *
+   * @private
+   * @param {string} source The source to compile.
+   * @param {Array} varNames An array of free variable names.
+   * @param {Array} varValues An array of free variable values.
+   * @param {string} [sourceURL=''] The sourceURL of the source.
+   * @returns {Function} Returns the compiled function.
+   */
+  function compileFunction(source, varNames, varValues, sourceURL) {
+    sourceURL = sourceURL ? ('\n/*\n//# sourceURL=' + sourceURL + '\n*/') : '';
+    try {
+      // provide the compiled function's source by its `toString` method or
+      // the `source` property as a convenience for inlining compiled templates
+      var result = Function(varNames, 'return ' + source + sourceURL).apply(undefined, varValues);
+      result.source = source;
+    } catch(e) {
+      e.source = source;
+      throw e;
+    }
+    return result;
+  }
+
   /**
    * Creates an array that is the composition of partially applied arguments,
    * placeholders, and provided arguments into a single array of arguments.
@@ -1064,7 +1173,7 @@
    * Creates a function that aggregates a collection, creating an accumulator
    * object composed from the results of running each element in the collection
    * through a callback. The given setter function sets the keys and values of
-   * the accumulator object. If `initializer` is provided will be used to
+   * the accumulator object. If `initializer` is provided it will be used to
    * initialize the accumulator object.
    *
    * @private
@@ -1642,7 +1751,7 @@
     var index = -1,
         length = array ? array.length : 0;
 
-    start = typeof start == 'undefined' ? 0 : (+start || 0);
+    start = start == null ? 0 : (+start || 0);
     if (start < 0) {
       start = nativeMax(length + start, 0);
     } else if (start > length) {
@@ -2036,8 +2145,8 @@
   /*--------------------------------------------------------------------------*/
 
   /**
-   * Checks if a given value is present in a collection using strict equality
-   * for comparisons, i.e. `===`. If `fromIndex` is negative, it is used as the
+   * Checks if `value` is present in `collection` using strict equality for
+   * comparisons, i.e. `===`. If `fromIndex` is negative, it is used as the
    * offset from the end of the collection.
    *
    * @static
@@ -2456,7 +2565,7 @@
    * @param {Array|Object|string} collection The collection to iterate over.
    * @param {Function|string} methodName The name of the method to invoke or
    *  the function invoked per iteration.
-   * @param {...*} [args] Arguments to invoke the method with.
+   * @param {...*} [args] The arguments to invoke the method with.
    * @returns {Array} Returns the array of results.
    * @example
    *
@@ -2467,17 +2576,7 @@
    * // => [['1', '2', '3'], ['4', '5', '6']]
    */
   function invoke(collection, methodName) {
-    var args = slice(arguments, 2),
-        index = -1,
-        isFunc = typeof methodName == 'function',
-        length = collection && collection.length,
-        result = Array(length < 0 ? 0 : length >>> 0);
-
-    baseEach(collection, function(value) {
-      var func = isFunc ? methodName : (value != null && value[methodName]);
-      result[++index] = func ? func.apply(value, args) : undefined;
-    });
-    return result;
+    return baseInvoke(collection, methodName, slice(arguments, 2));
   }
 
   /**
@@ -3214,7 +3313,7 @@
    * @category Functions
    * @param {Function} func The function to bind.
    * @param {*} [thisArg] The `this` binding of `func`.
-   * @param {...*} [args] Arguments to be partially applied.
+   * @param {...*} [args] The arguments to be partially applied.
    * @returns {Function} Returns the new bound function.
    * @example
    *
@@ -3244,8 +3343,8 @@
    * @memberOf _
    * @category Functions
    * @param {Object} object The object to bind and assign the bound methods to.
-   * @param {...string} [methodNames] The object method names to bind, specified
-   *  as individual method names or arrays of method names.
+   * @param {...(string|string[])} [methodNames] The object method names to bind,
+   *  specified as individual method names or arrays of method names.
    * @returns {Object} Returns `object`.
    * @example
    *
@@ -3259,12 +3358,26 @@
    * // => logs 'clicked docs', when the button is clicked
    */
   function bindAll(object) {
-    var funcs = arguments.length > 1 ? baseFlatten(arguments, true, false, 1) : functions(object),
-        index = -1,
-        length = funcs.length;
+    return baseBindAll(object, arguments.length > 1
+      ? baseFlatten(arguments, true, false, 1)
+      : functions(object));
+  }
+
+  /**
+   * The base implementation of `_.bindAll` without support for individual
+   * method name arguments.
+   *
+   * @private
+   * @param {Object} object The object to bind and assign the bound methods to.
+   * @param {string[]} methodNames The object method names to bind.
+   * @returns {Object} Returns `object`.
+   */
+  function baseBindAll(object, methodNames) {
+    var index = -1,
+        length = methodNames.length;
 
     while (++index < length) {
-      var key = funcs[index];
+      var key = methodNames[index];
       object[key] = createWrapper(object[key], BIND_FLAG, null, object);
     }
     return object;
@@ -3469,7 +3582,7 @@
    * @memberOf _
    * @category Functions
    * @param {Function} func The function to defer.
-   * @param {...*} [args] Arguments to invoke the function with.
+   * @param {...*} [args] The arguments to invoke the function with.
    * @returns {number} Returns the timer id.
    * @example
    *
@@ -3493,7 +3606,7 @@
    * @category Functions
    * @param {Function} func The function to delay.
    * @param {number} wait The number of milliseconds to delay execution.
-   * @param {...*} [args] Arguments to invoke the function with.
+   * @param {...*} [args] The arguments to invoke the function with.
    * @returns {number} Returns the timer id.
    * @example
    *
@@ -3636,7 +3749,7 @@
    * @memberOf _
    * @category Functions
    * @param {Function} func The function to partially apply arguments to.
-   * @param {...*} [args] Arguments to be partially applied.
+   * @param {...*} [args] The arguments to be partially applied.
    * @returns {Function} Returns the new partially applied function.
    * @example
    *
@@ -3731,8 +3844,8 @@
    * Assigns own enumerable properties of source object(s) to the destination
    * object. Subsequent sources will overwrite property assignments of previous
    * sources. If a callback is provided it will be executed to produce the
-   * assigned values. The callback is bound to `thisArg` and invoked with two
-   * arguments; (objectValue, sourceValue).
+   * assigned values. The callback is bound to `thisArg` and invoked with
+   * five arguments; (objectValue, sourceValue, key, object, source).
    *
    * @static
    * @memberOf _
@@ -3755,20 +3868,20 @@
    * defaults({ 'name': 'barney' }, { 'name': 'fred', 'employer': 'slate' });
    * // => { 'name': 'barney', 'employer': 'slate' }
    */
-  function assign(object, source, guard) {
+  function assign(object) {
     if (!object) {
       return object;
     }
     var args = arguments,
-        argsIndex = 0,
-        argsLength = args.length,
-        type = typeof guard;
+        index = 0,
+        length = args.length,
+        type = typeof args[2];
 
-    if ((type == 'number' || type == 'string') && args[3] && args[3][guard] === source) {
-      argsLength = 2;
+    if ((type == 'number' || type == 'string') && args[3] && args[3][args[2]] === args[1]) {
+      length = 2;
     }
-    while (++argsIndex < argsLength) {
-      source = args[argsIndex];
+    while (++index < length) {
+      var source = args[index];
       for (var key in source) {
         object[key] = source[key];
       }
@@ -3781,7 +3894,7 @@
    * be cloned, otherwise they will be assigned by reference. If a callback
    * is provided it will be executed to produce the cloned values. If the
    * callback returns `undefined` cloning will be handled by the method instead.
-   * The callback is bound to `thisArg` and invoked with one argument; (value).
+   * The callback is bound to `thisArg` and invoked with two argument; (value, index|key).
    *
    * Note: This method is loosely based on the structured clone algorithm. Functions
    * and DOM nodes are **not** cloned. The enumerable properties of `arguments` objects and
@@ -3848,20 +3961,20 @@
    * _.defaults({ 'name': 'barney' }, { 'name': 'fred', 'employer': 'slate' });
    * // => { 'name': 'barney', 'employer': 'slate' }
    */
-  function defaults(object, source, guard) {
+  function defaults(object) {
     if (!object) {
       return object;
     }
     var args = arguments,
-        argsIndex = 0,
-        argsLength = args.length,
-        type = typeof guard;
+        index = 0,
+        length = args.length,
+        type = typeof args[2];
 
-    if ((type == 'number' || type == 'string') && args[3] && args[3][guard] === source) {
-      argsLength = 2;
+    if ((type == 'number' || type == 'string') && args[3] && args[3][args[2]] === args[1]) {
+      length = 2;
     }
-    while (++argsIndex < argsLength) {
-      source = args[argsIndex];
+    while (++index < length) {
+      var source = args[index];
       for (var key in source) {
         if (typeof object[key] == 'undefined') {
           object[key] = source[key];
@@ -4106,7 +4219,7 @@
    * equivalent. If a callback is provided it will be executed to compare
    * values. If the callback returns `undefined` comparisons will be handled
    * by the method instead. The callback is bound to `thisArg` and invoked
-   * with two arguments; (value, other).
+   * with three arguments; (value, other, key).
    *
    * Note: This method supports comparing arrays, booleans, `Date` objects,
    * numbers, `Object` objects, regexes, and strings. Functions and DOM nodes
@@ -4194,7 +4307,9 @@
    * // => false
    */
   function isFunction(value) {
-    return typeof value == 'function';
+    // avoid a Chakra bug in IE 11
+    // https://github.com/jashkenas/underscore/issues/1621
+    return typeof value == 'function' || false;
   }
   // fallback for older versions of Chrome and Safari
   if (isFunction(/x/)) {
@@ -4207,6 +4322,8 @@
    * Checks if `value` is the language type of `Object`.
    * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
    *
+   * Note: See the [ES5 spec](http://es5.github.io/#x8) for more details.
+   *
    * @static
    * @memberOf _
    * @category Objects
@@ -4224,9 +4341,7 @@
    * // => false
    */
   function isObject(value) {
-    // check if the value is the ECMAScript language type of `Object`
-    // http://es5.github.io/#x8
-    // and avoid a V8 bug
+    // avoid a V8 bug in Chrome 19-20
     // https://code.google.com/p/v8/issues/detail?id=2291
     var type = typeof value;
     return type == 'function' || (value && type == 'object') || false;
@@ -4456,13 +4571,16 @@
    * // => { 'name': 'fred' }
    */
   function omit(object) {
+    if (!isObject(object)) {
+      return {};
+    }
     var omitProps = baseFlatten(arguments, true, false, 1),
         length = omitProps.length;
 
     while (length--) {
       omitProps[length] = String(omitProps[length]);
     }
-    return pick(object, baseDifference(keysIn(object), omitProps));
+    return basePick(object, baseDifference(keysIn(object), omitProps));
   }
 
   /**
@@ -4520,18 +4638,9 @@
    * // => { 'name': 'fred' }
    */
   function pick(object) {
-    var index = -1,
-        props = baseFlatten(arguments, true, false, 1),
-        length = props.length,
-        result = {};
-
-    while (++index < length) {
-      var key = props[index];
-      if (key in object) {
-        result[key] = object[key];
-      }
-    }
-    return result;
+    return isObject(object)
+      ? basePick(object, baseFlatten(arguments, true, false, 1))
+      : {};
   }
 
   /**
@@ -4612,7 +4721,7 @@
    * settings object is provided it will override `_.templateSettings` for the
    * template.
    *
-   * Note: In the development build, `_.template` utilizes `sourceURL`s for easier debugging.
+   * Note: In the development build, `_.template` utilizes sourceURLs for easier debugging.
    * See the [HTML5 Rocks article on sourcemaps](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
    * for more details.
    *
@@ -4630,9 +4739,9 @@
    * @param {Object} [options] The options object.
    * @param {RegExp} [options.escape] The HTML "escape" delimiter.
    * @param {RegExp} [options.evaluate] The "evaluate" delimiter.
-   * @param {Object} [options.imports] An object to import into the template as local variables.
+   * @param {Object} [options.imports] An object to import into the template as free variables.
    * @param {RegExp} [options.interpolate] The "interpolate" delimiter.
-   * @param {string} [options.sourceURL] The `sourceURL` of the template's compiled source.
+   * @param {string} [options.sourceURL] The sourceURL of the template's compiled source.
    * @param {string} [options.variable] The data object variable name.
    * @returns {Function|string} Returns the interpolated string if a data object
    *  is provided, else the compiled template function.
@@ -4670,7 +4779,7 @@
    * _.template(list, { 'people': ['fred', 'barney'] }, { 'imports': { 'jq': jQuery } });
    * // => '<li>fred</li><li>barney</li>'
    *
-   * // using the `sourceURL` option to specify a custom `sourceURL` for the template
+   * // using the `sourceURL` option to specify a custom sourceURL for the template
    * var compiled = _.template('hello <%= name %>', null, { 'sourceURL': '/basic/greeting.jst' });
    * compiled(data);
    * // => find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector
@@ -4734,17 +4843,8 @@
       source +
       'return __p\n}';
 
-    try {
-      var result = Function('_', 'return ' + source)(_);
-    } catch(e) {
-      e.source = source;
-      throw e;
-    }
-    if (data) {
-      return result(data);
-    }
-    result.source = source;
-    return result;
+    var result = compileFunction(source, ['_'], [_]);
+    return data ? result(data) : result;
   }
 
   /**
@@ -5173,7 +5273,7 @@
    * @returns {Array} Returns the array of results.
    * @example
    *
-   * var diceRolls = _.times(3, _.partial(_.random, 1, 6));
+   * var diceRolls = _.times(3, _.partial(_.random, 1, 6, false));
    * // => [3, 6, 4]
    *
    * _.times(3, function(n) { mage.castSpell(n); });
@@ -5350,7 +5450,7 @@
   /*--------------------------------------------------------------------------*/
 
   // add functions to `lodash.prototype`
-  mixin(assign({}, lodash));
+  mixin(baseAssign({}, lodash));
 
   /**
    * The semantic version number.
@@ -5367,7 +5467,7 @@
 
   // add `Array` mutator functions to the wrapper
   arrayEach(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(methodName) {
-    var func = arrayRef[methodName];
+    var func = arrayProto[methodName];
     lodash.prototype[methodName] = function() {
       var value = this.__wrapped__;
       func.apply(value, arguments);
@@ -5383,7 +5483,7 @@
 
   // add `Array` accessor functions to the wrapper
   arrayEach(['concat', 'join', 'slice'], function(methodName) {
-    var func = arrayRef[methodName];
+    var func = arrayProto[methodName];
     lodash.prototype[methodName] = function() {
       var value = this.__wrapped__,
           result = func.apply(value, arguments);
diff --git a/dist/lodash.underscore.min.js b/dist/lodash.underscore.min.js
index 9b3b9c813..a94de725e 100644
--- a/dist/lodash.underscore.min.js
+++ b/dist/lodash.underscore.min.js
@@ -3,39 +3,39 @@
  * Lo-Dash 2.4.1 (Custom Build) lodash.com/license | Underscore.js 1.6.0 underscorejs.org/LICENSE
  * Build: `lodash underscore -o ./dist/lodash.underscore.js`
  */
-;(function(){function n(n,r,t){t=(t||0)-1;for(var e=n?n.length:0;++t<e;)if(n[t]===r)return t;return-1}function r(n,r){var t;n:{t=n.a;var e=r.a;if(t!==e){if(t>e||typeof t=="undefined"){t=1;break n}if(t<e||typeof e=="undefined"){t=-1;break n}}t=0}return t||n.b-r.b}function t(n){return Nr[n]}function e(n){return"\\"+Br[n]}function u(n){return qr[n]}function o(n){return n instanceof o?n:new i(n)}function i(n,r){this.__chain__=!!r,this.__wrapped__=n}function f(n,r){for(var t=-1,e=n?n.length:0;++t<e&&r(n[t],t,n)!==hr;);return n
-}function a(n,r){for(var t=-1,e=n?n.length>>>0:0,u=Array(e);++t<e;)u[t]=r(n[t],t,n);return u}function c(n){return Z(n)?Yr(n):{}}function l(n,r,t){if(typeof n!="function")return ir;if(typeof r=="undefined"||!("prototype"in n))return n;switch(t){case 1:return function(t){return n.call(r,t)};case 2:return function(t,e){return n.call(r,t,e)};case 3:return function(t,e,u){return n.call(r,t,e,u)};case 4:return function(t,e,u,o){return n.call(r,t,e,u,o)}}return G(n,r)}function p(n){function r(){for(var n=-1,f=arguments.length,a=Array(f);++n<f;)a[n]=arguments[n];
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