diff --git a/dist/lodash.compat.js b/dist/lodash.compat.js
index 511eef9e1..20bfcb652 100644
--- a/dist/lodash.compat.js
+++ b/dist/lodash.compat.js
@@ -70,7 +70,7 @@
   /** Used to match `RegExp` flags from their coerced string values */
   var reFlags = /\w*$/;
 
-  /** Used to detected named functions */
+  /** Used to detect named functions */
   var reFuncName = /^\s*function[ \n\r\t]+\w/;
 
   /** Used to detect hexadecimal string values */
@@ -529,6 +529,19 @@
     return typeof value.toString != 'function' && typeof (value + '') == 'string';
   }
 
+  /**
+   * Used by `_.trimmedLeftIndex` and `_.trimmedRightIndex` to determine if a
+   * character code is whitespace.
+   *
+   * @private
+   * @param {number} charCode The character code to inspect.
+   * @returns {boolean} Returns `true` if `charCode` is whitespace, else `false`.
+   */
+  function isWhitespace(charCode) {
+    return ((charCode <= 160 && (charCode >= 9 && charCode <= 13) || charCode == 32 || charCode == 160) || charCode == 5760 || charCode == 6158 ||
+      (charCode >= 8192 && (charCode <= 8202 || charCode == 8232 || charCode == 8233 || charCode == 8239 || charCode == 8287 || charCode == 12288 || charCode == 65279)));
+  }
+
   /**
    * Used by `_.trim` and `_.trimLeft` to get the index of the first non-whitespace
    * character of `string`.
@@ -541,13 +554,7 @@
     var index = -1,
         length = string.length;
 
-    while (++index < length) {
-      var c = string.charCodeAt(index);
-      if (!((c <= 160 && (c >= 9 && c <= 13) || c == 32 || c == 160) || c == 5760 || c == 6158 ||
-          (c >= 8192 && (c <= 8202 || c == 8232 || c == 8233 || c == 8239 || c == 8287 || c == 12288 || c == 65279)))) {
-        break;
-      }
-    }
+    while (++index < length && isWhitespace(string.charCodeAt(index))) { }
     return index;
   }
 
@@ -562,13 +569,7 @@
   function trimmedRightIndex(string) {
     var index = string.length;
 
-    while (index--) {
-      var c = string.charCodeAt(index);
-      if (!((c <= 160 && (c >= 9 && c <= 13) || c == 32 || c == 160) || c == 5760 || c == 6158 ||
-          (c >= 8192 && (c <= 8202 || c == 8232 || c == 8233 || c == 8239 || c == 8287 || c == 12288 || c == 65279)))) {
-        break;
-      }
-    }
+    while (index-- && isWhitespace(string.charCodeAt(index))) { }
     return index;
   }
 
@@ -745,14 +746,14 @@
      * `chain`, `chunk`, `compact`, `compose`, `concat`, `constant`, `countBy`,
      * `create`, `curry`, `debounce`, `defaults`, `defer`, `delay`, `difference`,
      * `drop`, `dropRight`, `dropRightWhile`, `dropWhile`, `filter`, `flatten`,
-     * `forEach`, `forEachRight`, `forIn`, `forInRight`, `forOwn`, `forOwnRight`,
-     * `functions`, `groupBy`, `indexBy`, `initial`, `intersection`, `invert`,
-     * `invoke`, `keys`, `keysIn`, `map`, `mapValues`, `matches`, `memoize`, `merge`,
-     * `mixin`, `negate`, `noop`, `omit`, `once`, `pairs`, `partial`, `partialRight`,
-     * `partition`, `pick`, `pluck`, `property`, `pull`, `pullAt`, `push`, `range`,
-     * `reject`, `remove`, `rest`, `reverse`, `shuffle`, `slice`, `sort`, `sortBy`,
-     * `splice`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, `tap`,
-     * `throttle`, `times`, `toArray`, `transform`, `union`, `uniq`, `unshift`,
+     * `flattenDeep`, `forEach`, `forEachRight`, `forIn`, `forInRight`, `forOwn`,
+     * `forOwnRight`, `functions`, `groupBy`, `indexBy`, `initial`, `intersection`,
+     * `invert`, `invoke`, `keys`, `keysIn`, `map`, `mapValues`, `matches`, `memoize`,
+     * `merge`, `mixin`, `negate`, `noop`, `omit`, `once`, `pairs`, `partial`,
+     * `partialRight`, `partition`, `pick`, `pluck`, `property`, `pull`, `pullAt`,
+     * `push`, `range`, `reject`, `remove`, `rest`, `reverse`, `shuffle`, `slice`,
+     * `sort`, `sortBy`, `splice`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`,
+     * `tap`, `throttle`, `times`, `toArray`, `transform`, `union`, `uniq`, `unshift`,
      * `unzip`, `values`, `valuesIn`, `where`, `without`, `wrap`, `xor`, `zip`,
      * and `zipObject`
      *
@@ -1057,6 +1058,26 @@
 
     /*--------------------------------------------------------------------------*/
 
+    /**
+     * Appends placeholder indexes to `array` adding `offset` to each appended index.
+     *
+     * @private
+     * @param {Array} array The array of placeholder indexes to append to.
+     * @param {Array} indexes The array of placeholder indexes to append.
+     * @param {number} offset The placeholder offset.
+     * @returns {Array} Returns `array`.
+     */
+    function appendHolders(array, indexes, offset) {
+      var length = array.length,
+          index = indexes.length;
+
+      array.length += index;
+      while (index--) {
+        array[length + index] = indexes[index] + offset;
+      }
+      return array;
+    }
+
     /**
      * A specialized version of `_.forEach` for arrays without support for
      * callback shorthands or `this` binding.
@@ -1068,7 +1089,7 @@
      */
     function arrayEach(array, iterator) {
       var index = -1,
-          length = array ? array.length : 0;
+          length = array.length;
 
       while (++index < length) {
         if (iterator(array[index], index, array) === false) {
@@ -1088,7 +1109,7 @@
      * @returns {Array} Returns `array`.
      */
     function arrayEachRight(array, iterator) {
-      var length = array ? array.length : 0;
+      var length = array.length;
 
       while (length--) {
         if (iterator(array[length], length, array) === false) {
@@ -1131,7 +1152,7 @@
      */
     function arrayMap(array, iterator) {
       var index = -1,
-          length = array ? array.length : 0,
+          length = array.length,
           result = Array(length);
 
       while (++index < length) {
@@ -1291,6 +1312,26 @@
       return 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 = methodNames[index];
+        object[key] = createWrapper([object[key], BIND_FLAG, null, object]);
+      }
+      return object;
+    }
+
     /**
      * The base implementation of `_.callback` without support for creating
      * "_.pluck" and "_.where" style callbacks.
@@ -1427,7 +1468,8 @@
               if (Ctor instanceof Ctor) {
                 Ctor = ctorByClass[className];
               }
-              return new Ctor(cloneBuffer(value.buffer), value.byteOffset, value.length);
+              var buffer = value.buffer;
+              return new Ctor(isDeep ? cloneBuffer(buffer) : buffer, value.byteOffset, value.length);
 
             case numberClass:
             case stringClass:
@@ -1503,18 +1545,7 @@
      * sets its metadata.
      *
      * @private
-     * @param {Array} data The metadata array.
-     * @param {Function|string} data[0] The function or method name to reference.
-     * @param {number} data[1] The bitmask of flags to compose. See `createWrapper`
-     *  for more details.
-     * @param {number} data[2] The arity of `data[0]`.
-     * @param {*} [data[3]] The `this` binding of `data[0]`.
-     * @param {Array} [data[4]] An array of arguments to prepend to those
-     *  provided to the new function.
-     * @param {Array} [data[5]] An array of arguments to append to those
-     *  provided to the new function.
-     * @param {Array} [data[6]] An array of `data[4]` placeholder indexes.
-     * @param {Array} [data[7]] An array of `data[5]` placeholder indexes.
+     * @param {Array} data The metadata array. See `createWrapper` for more details.
      * @returns {Function} Returns the new function.
      */
     function baseCreateWrapper(data) {
@@ -1522,7 +1553,7 @@
       if (bitmask == BIND_FLAG) {
         return setData(createBindWrapper(data), data);
       }
-      var partialHolders = data[6];
+      var partialHolders = data[5];
       if ((bitmask == PARTIAL_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG)) && !partialHolders.length) {
         return setData(createPartialWrapper(data), data);
       }
@@ -1530,7 +1561,7 @@
           arity = data[2],
           thisArg = data[3],
           partialArgs = data[4],
-          partialRightArgs = data[5],
+          partialRightArgs = data[6],
           partialRightHolders = data[7];
 
       var isBind = bitmask & BIND_FLAG,
@@ -1557,7 +1588,9 @@
           args = composeArgsRight(partialRightArgs, partialRightHolders, args);
         }
         if (isCurry || isCurryRight) {
-          var newPartialHolders = getHolders(args);
+          var placeholder = wrapper.placeholder,
+              newPartialHolders = getHolders(args, placeholder);
+
           length -= newPartialHolders.length;
 
           if (length < arity) {
@@ -1567,10 +1600,13 @@
             if (!isCurryBound) {
               bitmask &= ~(BIND_FLAG | BIND_KEY_FLAG);
             }
-            var newData = [func, bitmask, nativeMax(arity - length, 0), thisArg];
-            newData[isCurry ? 4 : 5] = args;
-            newData[isCurry ? 6 : 7] = newPartialHolders;
-            return baseCreateWrapper(newData);
+            var newData = [func, bitmask, nativeMax(arity - length, 0), thisArg, null, null];
+            newData[isCurry ? 4 : 6] = args;
+            newData[isCurry ? 5 : 7] = newPartialHolders;
+
+            var result = baseCreateWrapper(newData);
+            result.placeholder = placeholder;
+            return result;
           }
         }
         var thisBinding = isBind ? thisArg : this;
@@ -1597,7 +1633,7 @@
       if (typeof arity != 'number') {
         arity = +arity || (func ? func.length : 0);
       }
-      return createWrapper(func, bitmask, arity);
+      return createWrapper([func, bitmask, arity]);
     }
 
     /**
@@ -2224,15 +2260,19 @@
      * @param {*} [thisArg] The `this` binding of `func`.
      * @returns {Function} Returns the new partially applied function.
      */
-    function basePartial(func, bitmask, args, thisArg) {
+    function basePartial(func, bitmask, args, holders, thisArg) {
       if (func) {
         var data = func[EXPANDO],
             arity = data ? data[2] : func.length;
 
         arity -= args.length;
       }
-      var isPartial = bitmask & PARTIAL_FLAG;
-      return createWrapper(func, bitmask, arity, thisArg, isPartial && args, !isPartial && args);
+      var isPartial = bitmask & PARTIAL_FLAG,
+          newData = [func, bitmask, arity, thisArg, null, null];
+
+      newData[isPartial ? 4 : 6] = args;
+      newData[isPartial ? 5 : 7] = holders;
+      return createWrapper(newData);
     }
 
     /**
@@ -2589,9 +2629,7 @@
      * with its associated `this` binding.
      *
      * @private
-     * @param {Array} data The metadata array.
-     * @param {Function|string} data[0] The function or method name to reference.
-     * @param {*} data[3] The `this` binding of `data[0]`.
+     * @param {Array} data The metadata array. See `createWrapper` for more details.
      * @returns {Function} Returns the new bound function.
      */
     function createBindWrapper(data) {
@@ -2670,22 +2708,15 @@
      * with its associated partially applied arguments and optional `this` binding.
      *
      * @private
-     * @param {Array} data The metadata array.
-     * @param {Function|string} data[0] The function or method name to reference.
-     * @param {number} data[1] The bitmask of flags to compose. See `createWrapper`
-     *  for more details.
-     * @param {*} [data[3]] The `this` binding of `data[0]`.
-     * @param {Array} data[4] An array of arguments to prepend to those
-     *  provided to the new function.
+     * @param {Array} data The metadata array. See `createWrapper` for more details.
      * @returns {Function} Returns the new bound function.
      */
     function createPartialWrapper(data) {
       var func = data[0],
-          bitmask = data[1],
           thisArg = data[3],
           partialArgs = data[4];
 
-      var isBind = bitmask & BIND_FLAG,
+      var isBind = data[1] & BIND_FLAG,
           Ctor = createCtorWrapper(func);
 
       function wrapper() {
@@ -2709,29 +2740,35 @@
     }
 
     /**
-     * Creates a function that either curries or invokes `func` with an optional
+     * Creates a function that either curries or invokes `func` with optional
      * `this` binding and partially applied arguments.
      *
      * @private
-     * @param {Function|string} func The function or method name to reference.
-     * @param {number} bitmask The bitmask of flags to compose.
+     * @param {Array} data The metadata array.
+     * @param {Function|string} data[0] The function or method name to reference.
+     * @param {number} data[1] The bitmask of flags to compose.
      *  The bitmask may be composed of the following flags:
-     *  1  - `_.bind`
-     *  2  - `_.bindKey`
-     *  4  - `_.curry`
-     *  8  - `_.curryRight`
-     *  16 - `_.curry` or `_.curryRight` of a bound function
-     *  32 - `_.partial`
-     *  64 - `_.partialRight`
-     * @param {number} [arity] The arity of `func`.
-     * @param {*} [thisArg] The `this` binding of `func`.
-     * @param {Array} [partialArgs] An array of arguments to prepend to those
+     *   1  - `_.bind`
+     *   2  - `_.bindKey`
+     *   4  - `_.curry`
+     *   8  - `_.curryRight`
+     *   16 - `_.curry` or `_.curryRight` of a bound function
+     *   32 - `_.partial`
+     *   64 - `_.partialRight`
+     * @param {number} data[2] The arity of `data[0]`.
+     * @param {*} [data[3]] The `this` binding of `data[0]`.
+     * @param {Array} [data[4]] An array of arguments to prepend to those
      *  provided to the new function.
-     * @param {Array} [partialRightArgs] An array of arguments to append to those
+     * @param {Array} [data[5]] An array of `data[4]` placeholder indexes.
+     * @param {Array} [data[6]] An array of arguments to append to those
      *  provided to the new function.
+     * @param {Array} [data[7]] An array of `data[6]` placeholder indexes.
      * @returns {Function} Returns the new function.
      */
-    function createWrapper(func, bitmask, arity, thisArg, partialArgs, partialRightArgs) {
+    function createWrapper(data) {
+      var func = data[0],
+          bitmask = data[1];
+
       var isBind = bitmask & BIND_FLAG,
           isBindKey = bitmask & BIND_KEY_FLAG,
           isPartial = bitmask & PARTIAL_FLAG,
@@ -2740,35 +2777,43 @@
       if (!isBindKey && !isFunction(func)) {
         throw new TypeError(FUNC_ERROR_TEXT);
       }
+      var arity = data[2],
+          partialArgs = data[4],
+          partialRightArgs = data[6];
+
       if (isPartial && !partialArgs.length) {
-        bitmask &= ~PARTIAL_FLAG;
-        isPartial = partialArgs = false;
+        isPartial = false;
+        data[1] = (bitmask &= ~PARTIAL_FLAG);
+        data[4] = data[5] = partialArgs = null;
       }
       if (isPartialRight && !partialRightArgs.length) {
-        bitmask &= ~PARTIAL_RIGHT_FLAG;
-        isPartialRight = partialRightArgs = false;
+        isPartialRight = false;
+        data[1] = (bitmask &= ~PARTIAL_RIGHT_FLAG);
+        data[6] = data[7] = partialRightArgs = null;
       }
-      var data = !isBindKey && func[EXPANDO];
-      if (data && data !== true) {
-        // shallow clone `data`
-        data = slice(data);
+      var funcData = !isBindKey && func[EXPANDO];
+      if (funcData && funcData !== true) {
+        // shallow clone `funcData`
+        funcData = slice(funcData);
 
         // clone partial left arguments
-        if (data[4]) {
-          data[4] = slice(data[4]);
+        if (funcData[4]) {
+          funcData[4] = slice(funcData[4]);
+          funcData[5] = slice(funcData[5]);
         }
         // clone partial right arguments
-        if (data[5]) {
-          data[5] = slice(data[5]);
+        if (funcData[6]) {
+          funcData[6] = slice(funcData[6]);
+          funcData[7] = slice(funcData[7]);
         }
         // set arity if provided
         if (typeof arity == 'number') {
-          data[2] = arity;
+          funcData[2] = arity;
         }
         // set `thisArg` if not previously bound
-        var bound = data[1] & BIND_FLAG;
+        var bound = funcData[1] & BIND_FLAG;
         if (isBind && !bound) {
-          data[3] = thisArg;
+          funcData[3] = data[3];
         }
         // set if currying a bound function
         if (!isBind && bound) {
@@ -2776,35 +2821,39 @@
         }
         // append partial left arguments
         if (isPartial) {
-          if (data[4]) {
-            push.apply(data[4], partialArgs);
+          var partialHolders = data[5],
+              funcPartialArgs = funcData[4];
+
+          if (funcPartialArgs) {
+            appendHolders(funcData[5], partialHolders, funcPartialArgs.length);
+            push.apply(funcPartialArgs, partialArgs);
           } else {
-            data[4] = partialArgs;
+            funcData[4] = partialArgs;
+            funcData[5] = partialHolders;
           }
         }
         // prepend partial right arguments
         if (isPartialRight) {
-          if (data[5]) {
-            unshift.apply(data[5], partialRightArgs);
+          var partialRightHolders = data[7],
+              funcPartialRightArgs = funcData[6];
+
+          if (funcPartialRightArgs) {
+            appendHolders(funcData[7], partialRightHolders, funcPartialRightArgs.length);
+            unshift.apply(funcPartialRightArgs, partialRightArgs);
           } else {
-            data[5] = partialRightArgs;
+            funcData[6] = partialRightArgs;
+            funcData[7] = partialRightHolders;
           }
         }
         // merge flags
-        data[1] |= bitmask;
-        return createWrapper.apply(undefined, data);
-      }
-      if (isPartial) {
-        var partialHolders = getHolders(partialArgs);
-      }
-      if (isPartialRight) {
-        var partialRightHolders = getHolders(partialRightArgs);
+        funcData[1] |= bitmask;
+        return createWrapper(funcData);
       }
       if (arity == null) {
         arity = isBindKey ? 0 : func.length;
       }
-      arity = nativeMax(arity, 0);
-      return baseCreateWrapper([func, bitmask, arity, thisArg, partialArgs, partialRightArgs, partialHolders, partialRightHolders]);
+      data[2] = nativeMax(arity, 0);
+      return baseCreateWrapper(data);
     }
 
     /**
@@ -2829,13 +2878,13 @@
      * @param {Array} array The array to inspect.
      * @returns {Array} Returns the new array of placeholder indexes.
      */
-    function getHolders(array) {
+    function getHolders(array, placeholder) {
       var index = -1,
           length = array.length,
           result = [];
 
       while (++index < length) {
-        if (array[index] === lodash) {
+        if (array[index] === placeholder) {
           result.push(index);
         }
       }
@@ -3042,8 +3091,8 @@
      * Converts `collection` to an array if it is not an array-like value.
      *
      * @private
-     * @param {Array|Object|string} collection The collection to inspect.
-     * @returns {Array|Object} Returns the iterable object.
+     * @param {Array|Object|string} collection The collection to process.
+     * @returns {Array} Returns the iterable object.
      */
     function toIterable(collection) {
       var length = collection ? collection.length : 0;
@@ -3465,6 +3514,24 @@
       return baseFlatten(array, isDeep);
     }
 
+    /**
+     * Recursively flattens a nested array.
+     *
+     * @static
+     * @memberOf _
+     * @category Array
+     * @param {Array} array The array to recursively flatten.
+     * @returns {Array} Returns the new flattened array.
+     * @example
+     *
+     * _.flattenDeep([1, [2], [3, [[4]]]]);
+     * // => [1, 2, 3, 4];
+     */
+    function flattenDeep(array) {
+      var length = array ? array.length : 0;
+      return length ? baseFlatten(array, true) : [];
+    }
+
     /**
      * Gets the index at which the first occurrence of `value` is found in `array`
      * using strict equality for comparisons, i.e. `===`. If `fromIndex` is negative,
@@ -5624,9 +5691,13 @@
      * // => 'hi fred'
      */
     function bind(func, thisArg) {
-      return arguments.length < 3
-        ? createWrapper(func, BIND_FLAG, null, thisArg)
-        : basePartial(func, BIND_FLAG | PARTIAL_FLAG, slice(arguments, 2), thisArg);
+      if (arguments.length < 3) {
+        return createWrapper([func, BIND_FLAG, null, thisArg]);
+      }
+      var args = slice(arguments, 2),
+          partialHolders = getHolders(args, bind.placeholder);
+
+      return basePartial(func, BIND_FLAG | PARTIAL_FLAG, args, partialHolders, thisArg);
     }
 
     /**
@@ -5663,26 +5734,6 @@
       );
     }
 
-    /**
-     * 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 = methodNames[index];
-        object[key] = createWrapper(object[key], BIND_FLAG, null, object);
-      }
-      return object;
-    }
-
     /**
      * Creates a function that invokes the method at `object[key]` and prepends
      * any additional `bindKey` arguments to those provided to the bound function.
@@ -5719,9 +5770,12 @@
      * // => 'hiya fred!'
      */
     function bindKey(object, key) {
-      return arguments.length < 3
-        ? createWrapper(key, BIND_FLAG | BIND_KEY_FLAG, null, object)
-        : createWrapper(key, BIND_FLAG | BIND_KEY_FLAG | PARTIAL_FLAG, null, object, slice(arguments, 2));
+      var data = [key, BIND_FLAG | BIND_KEY_FLAG, null, object];
+      if (arguments.length > 2) {
+        var args = slice(arguments, 2);
+        data.push(args, getHolders(args, bindKey.placeholder));
+      }
+      return createWrapper(data);
     }
 
     /**
@@ -5809,7 +5863,9 @@
      * // => [1, 2, 3]
      */
     function curry(func, arity) {
-      return baseCurry(func, CURRY_FLAG, arity);
+      var result = baseCurry(func, CURRY_FLAG, arity);
+      result.placeholder = curry.placeholder;
+      return result;
     }
 
     /**
@@ -5840,7 +5896,9 @@
      * // => [1, 2, 3]
      */
     function curryRight(func, arity) {
-      return baseCurry(func, CURRY_RIGHT_FLAG, arity);
+      var result = baseCurry(func, CURRY_RIGHT_FLAG, arity);
+      result.placeholder = curryRight.placeholder;
+      return result;
     }
 
     /**
@@ -5855,6 +5913,9 @@
      * the trailing edge of the timeout only if the the debounced function is
      * invoked more than once during the `wait` timeout.
      *
+     * See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation)
+     * for details over the differences between `_.debounce` and `_.throttle`.
+     *
      * @static
      * @memberOf _
      * @category Function
@@ -6186,7 +6247,10 @@
      * // => 'hello fred'
      */
     function partial(func) {
-      return basePartial(func, PARTIAL_FLAG, slice(arguments, 1));
+      var args = slice(arguments, 1),
+          partialHolders = getHolders(args, partial.placeholder);
+
+      return basePartial(func, PARTIAL_FLAG, args, partialHolders);
     }
 
     /**
@@ -6221,7 +6285,10 @@
      * // => { 'a': { 'b': { 'c': 1, 'd': 2 } } }
      */
     function partialRight(func) {
-      return basePartial(func, PARTIAL_RIGHT_FLAG, slice(arguments, 1));
+      var args = slice(arguments, 1),
+          partialHolders = getHolders(args, partialRight.placeholder);
+
+      return basePartial(func, PARTIAL_RIGHT_FLAG, args, partialHolders);
     }
 
     /**
@@ -6236,6 +6303,9 @@
      * the trailing edge of the timeout only if the the throttled function is
      * invoked more than once during the `wait` timeout.
      *
+     * See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation)
+     * for details over the differences between `_.throttle` and `_.debounce`.
+     *
      * @static
      * @memberOf _
      * @category Function
@@ -6275,7 +6345,6 @@
       debounceOptions.leading = leading;
       debounceOptions.maxWait = +wait;
       debounceOptions.trailing = trailing;
-
       return debounce(func, wait, debounceOptions);
     }
 
@@ -6301,7 +6370,7 @@
      * // => '<p>fred, barney, &amp; pebbles</p>'
      */
     function wrap(value, wrapper) {
-      return createWrapper(wrapper, PARTIAL_FLAG, null, null, [value]);
+      return basePartial(wrapper, PARTIAL_FLAG, [value], []);
     }
 
     /*--------------------------------------------------------------------------*/
@@ -8091,6 +8160,7 @@
      * @param {RegExp} [options.interpolate] The "interpolate" delimiter.
      * @param {string} [options.sourceURL] The sourceURL of the template's compiled source.
      * @param {string} [options.variable] The data object variable name.
+     * @param- {Object} [otherOptions] Enables the legacy `options` param signature.
      * @returns {Function} Returns the compiled template function.
      * @example
      *
@@ -8158,13 +8228,13 @@
      *   };\
      * ');
      */
-    function template(string, options) {
+    function template(string, options, otherOptions) {
       // based on John Resig's `tmpl` implementation
       // http://ejohn.org/blog/javascript-micro-templating/
       // and Laura Doktorova's doT.js
       // https://github.com/olado/doT
       var settings = lodash.templateSettings;
-      options = assign({}, options, settings, assignOwnDefaults);
+      options = assign({}, otherOptions || options, settings, assignOwnDefaults);
       string = String(string == null ? '' : string);
 
       var imports = assign({}, options.imports, settings.imports, assignOwnDefaults),
@@ -9037,6 +9107,9 @@
     // ensure `new lodashWrapper` is an instance of `lodash`
     lodashWrapper.prototype = lodash.prototype;
 
+    // assign default placeholders
+    bind.placeholder = bindKey.placeholder = curry.placeholder = curryRight.placeholder = partial.placeholder = partialRight.placeholder = lodash;
+
     // add functions that return wrapped values when chaining
     lodash.after = after;
     lodash.assign = assign;
@@ -9066,6 +9139,7 @@
     lodash.dropWhile = dropWhile;
     lodash.filter = filter;
     lodash.flatten = flatten;
+    lodash.flattenDeep = flattenDeep;
     lodash.forEach = forEach;
     lodash.forEachRight = forEachRight;
     lodash.forIn = forIn;
diff --git a/dist/lodash.compat.min.js b/dist/lodash.compat.min.js
index 0891d946b..6d593502f 100644
--- a/dist/lodash.compat.min.js
+++ b/dist/lodash.compat.min.js
@@ -4,70 +4,71 @@
  * Build: `lodash -o ./dist/lodash.compat.js`
  */
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+return e},g.toArray=function(n){var t=Rr(n);return t===n?Lr(n):t},g.transform=function(n,t,r,e){var u=xr(n);if(null==r)if(u)r=[];else{if(ve(n))var o=n.constructor,o=o&&o.prototype;r=Bt(o)}return t&&(t=wr(t,e,4),(u?Ot:Qt)(n,function(n,e,u){return t(r,n,e,u)})),r},g.union=function(){return pr(Jt(arguments,false,true))},g.uniq=Pr,g.unzip=$r,g.values=be,g.valuesIn=function(n){return hr(n,_e)},g.where=function(n,t){return qr(n,Ie(t))},g.without=function(){return zt(arguments[0],Lr(arguments,1))},g.wrap=function(n,t){return ir(t,O,[n],[])
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+var t=n.length;return typeof t=="number"&&-1<t&&t<=k&&(Tu(n)||me(n)||se(n)||typeof n=="object"&&ge(n.splice))?!t:!Nu(n).length},g.isEqual=function(n,t,r,e){return r=typeof r=="function"&&Pt(r,e,3),!r&&Or(n)&&Or(t)?n===t:rr(n,t,r)},g.isError=he,g.isFinite=Lu,g.isFunction=ge,g.isNaN=function(n){return ye(n)&&n!=+n},g.isNull=function(n){return null===n},g.isNumber=ye,g.isObject=ve,g.isPlainObject=Wu,g.isRegExp=de,g.isString=me,g.isUndefined=function(n){return typeof n=="undefined"},g.kebabCase=Bu,g.last=function(n){var t=n?n.length:0;
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+return Qt(g,function(t,r){g.prototype[r]||(n[r]=t)}),n}(),false),g.sample=function(n,t,r){n=Rr(n);var e=n.length;return null==t||r?0<e?n[fr(0,e-1)]:_:(n=Qr(n),n.length=du(0>t?0:+t||0,n.length),n)},Qt(g,function(n,t){var r="sample"!=t;g.prototype[t]||(g.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})}),g.VERSION=b,g.prototype.chain=function(){return this.__chain__=true,this},g.prototype.toJSON=Dr,g.prototype.toString=function(){return Pe(this.__wrapped__)
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+jt[rt]=jt[et]=jt[ht]=jt[gt]=jt[vt]=jt[yt]=jt[dt]=jt[mt]=jt[_t]=jt[bt]=jt[wt]=true,jt[pt]=jt[ut]=jt[ot]=jt[it]=jt[at]=jt["[object Map]"]=jt[ft]=jt[lt]=jt[ct]=jt["[object Set]"]=jt[st]=jt["[object WeakMap]"]=false;var At={};At[rt]=At[et]=At[pt]=At[ut]=At[ot]=At[ht]=At[gt]=At[vt]=At[yt]=At[dt]=At[ft]=At[lt]=At[ct]=At[st]=At[mt]=At[_t]=At[bt]=At[wt]=true,At[it]=At[at]=At["[object Map]"]=At["[object Set]"]=At["[object WeakMap]"]=false;var xt={leading:false,maxWait:0,trailing:false},Et={configurable:false,enumerable:false,value:null,writable:false},Ot={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;","`":"&#96;"},It={"&amp;":"&","&lt;":"<","&gt;":">","&quot;":'"',"&#39;":"'","&#96;":"`"},Ct={"\xc0":"A","\xc1":"A","\xc2":"A","\xc3":"A","\xc4":"A","\xc5":"A","\xe0":"a","\xe1":"a","\xe2":"a","\xe3":"a","\xe4":"a","\xe5":"a","\xc7":"C","\xe7":"c","\xd0":"D","\xf0":"d","\xc8":"E","\xc9":"E","\xca":"E","\xcb":"E","\xe8":"e","\xe9":"e","\xea":"e","\xeb":"e","\xcc":"I","\xcd":"I","\xce":"I","\xcf":"I","\xec":"i","\xed":"i","\xee":"i","\xef":"i","\xd1":"N","\xf1":"n","\xd2":"O","\xd3":"O","\xd4":"O","\xd5":"O","\xd6":"O","\xd8":"O","\xf2":"o","\xf3":"o","\xf4":"o","\xf5":"o","\xf6":"o","\xf8":"o","\xd9":"U","\xda":"U","\xdb":"U","\xdc":"U","\xf9":"u","\xfa":"u","\xfb":"u","\xfc":"u","\xdd":"Y","\xfd":"y","\xff":"y","\xc6":"AE","\xe6":"ae","\xde":"Th","\xfe":"th","\xdf":"ss","\xd7":" ","\xf7":" "},St={"function":true,object:true},Rt={"\\":"\\","'":"'","\n":"n","\r":"r","\u2028":"u2028","\u2029":"u2029"},kt=St[typeof window]&&window||this,Ft=St[typeof exports]&&exports&&!exports.nodeType&&exports,St=St[typeof module]&&module&&!module.nodeType&&module,Ut=Ft&&St&&typeof global=="object"&&global;
+!Ut||Ut.global!==Ut&&Ut.window!==Ut&&Ut.self!==Ut||(kt=Ut);var Ut=St&&St.exports===Ft&&Ft,Tt=m();typeof define=="function"&&typeof define.amd=="object"&&define.amd?(kt._=Tt, define(function(){return Tt})):Ft&&St?Ut?(St.exports=Tt)._=Tt:Ft._=Tt:kt._=Tt}).call(this);
\ No newline at end of file
diff --git a/dist/lodash.js b/dist/lodash.js
index 6dd402453..8ff5d0b0d 100644
--- a/dist/lodash.js
+++ b/dist/lodash.js
@@ -70,7 +70,7 @@
   /** Used to match `RegExp` flags from their coerced string values */
   var reFlags = /\w*$/;
 
-  /** Used to detected named functions */
+  /** Used to detect named functions */
   var reFuncName = /^\s*function[ \n\r\t]+\w/;
 
   /** Used to detect hexadecimal string values */
@@ -510,6 +510,19 @@
     return '\\' + stringEscapes[chr];
   }
 
+  /**
+   * Used by `_.trimmedLeftIndex` and `_.trimmedRightIndex` to determine if a
+   * character code is whitespace.
+   *
+   * @private
+   * @param {number} charCode The character code to inspect.
+   * @returns {boolean} Returns `true` if `charCode` is whitespace, else `false`.
+   */
+  function isWhitespace(charCode) {
+    return ((charCode <= 160 && (charCode >= 9 && charCode <= 13) || charCode == 32 || charCode == 160) || charCode == 5760 || charCode == 6158 ||
+      (charCode >= 8192 && (charCode <= 8202 || charCode == 8232 || charCode == 8233 || charCode == 8239 || charCode == 8287 || charCode == 12288 || charCode == 65279)));
+  }
+
   /**
    * Used by `_.trim` and `_.trimLeft` to get the index of the first non-whitespace
    * character of `string`.
@@ -522,13 +535,7 @@
     var index = -1,
         length = string.length;
 
-    while (++index < length) {
-      var c = string.charCodeAt(index);
-      if (!((c <= 160 && (c >= 9 && c <= 13) || c == 32 || c == 160) || c == 5760 || c == 6158 ||
-          (c >= 8192 && (c <= 8202 || c == 8232 || c == 8233 || c == 8239 || c == 8287 || c == 12288 || c == 65279)))) {
-        break;
-      }
-    }
+    while (++index < length && isWhitespace(string.charCodeAt(index))) { }
     return index;
   }
 
@@ -543,13 +550,7 @@
   function trimmedRightIndex(string) {
     var index = string.length;
 
-    while (index--) {
-      var c = string.charCodeAt(index);
-      if (!((c <= 160 && (c >= 9 && c <= 13) || c == 32 || c == 160) || c == 5760 || c == 6158 ||
-          (c >= 8192 && (c <= 8202 || c == 8232 || c == 8233 || c == 8239 || c == 8287 || c == 12288 || c == 65279)))) {
-        break;
-      }
-    }
+    while (index-- && isWhitespace(string.charCodeAt(index))) { }
     return index;
   }
 
@@ -697,14 +698,14 @@
      * `chain`, `chunk`, `compact`, `compose`, `concat`, `constant`, `countBy`,
      * `create`, `curry`, `debounce`, `defaults`, `defer`, `delay`, `difference`,
      * `drop`, `dropRight`, `dropRightWhile`, `dropWhile`, `filter`, `flatten`,
-     * `forEach`, `forEachRight`, `forIn`, `forInRight`, `forOwn`, `forOwnRight`,
-     * `functions`, `groupBy`, `indexBy`, `initial`, `intersection`, `invert`,
-     * `invoke`, `keys`, `keysIn`, `map`, `mapValues`, `matches`, `memoize`, `merge`,
-     * `mixin`, `negate`, `noop`, `omit`, `once`, `pairs`, `partial`, `partialRight`,
-     * `partition`, `pick`, `pluck`, `property`, `pull`, `pullAt`, `push`, `range`,
-     * `reject`, `remove`, `rest`, `reverse`, `shuffle`, `slice`, `sort`, `sortBy`,
-     * `splice`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, `tap`,
-     * `throttle`, `times`, `toArray`, `transform`, `union`, `uniq`, `unshift`,
+     * `flattenDeep`, `forEach`, `forEachRight`, `forIn`, `forInRight`, `forOwn`,
+     * `forOwnRight`, `functions`, `groupBy`, `indexBy`, `initial`, `intersection`,
+     * `invert`, `invoke`, `keys`, `keysIn`, `map`, `mapValues`, `matches`, `memoize`,
+     * `merge`, `mixin`, `negate`, `noop`, `omit`, `once`, `pairs`, `partial`,
+     * `partialRight`, `partition`, `pick`, `pluck`, `property`, `pull`, `pullAt`,
+     * `push`, `range`, `reject`, `remove`, `rest`, `reverse`, `shuffle`, `slice`,
+     * `sort`, `sortBy`, `splice`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`,
+     * `tap`, `throttle`, `times`, `toArray`, `transform`, `union`, `uniq`, `unshift`,
      * `unzip`, `values`, `valuesIn`, `where`, `without`, `wrap`, `xor`, `zip`,
      * and `zipObject`
      *
@@ -900,6 +901,26 @@
 
     /*--------------------------------------------------------------------------*/
 
+    /**
+     * Appends placeholder indexes to `array` adding `offset` to each appended index.
+     *
+     * @private
+     * @param {Array} array The array of placeholder indexes to append to.
+     * @param {Array} indexes The array of placeholder indexes to append.
+     * @param {number} offset The placeholder offset.
+     * @returns {Array} Returns `array`.
+     */
+    function appendHolders(array, indexes, offset) {
+      var length = array.length,
+          index = indexes.length;
+
+      array.length += index;
+      while (index--) {
+        array[length + index] = indexes[index] + offset;
+      }
+      return array;
+    }
+
     /**
      * A specialized version of `_.forEach` for arrays without support for
      * callback shorthands or `this` binding.
@@ -911,7 +932,7 @@
      */
     function arrayEach(array, iterator) {
       var index = -1,
-          length = array ? array.length : 0;
+          length = array.length;
 
       while (++index < length) {
         if (iterator(array[index], index, array) === false) {
@@ -931,7 +952,7 @@
      * @returns {Array} Returns `array`.
      */
     function arrayEachRight(array, iterator) {
-      var length = array ? array.length : 0;
+      var length = array.length;
 
       while (length--) {
         if (iterator(array[length], length, array) === false) {
@@ -974,7 +995,7 @@
      */
     function arrayMap(array, iterator) {
       var index = -1,
-          length = array ? array.length : 0,
+          length = array.length,
           result = Array(length);
 
       while (++index < length) {
@@ -1134,6 +1155,26 @@
       return 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 = methodNames[index];
+        object[key] = createWrapper([object[key], BIND_FLAG, null, object]);
+      }
+      return object;
+    }
+
     /**
      * The base implementation of `_.callback` without support for creating
      * "_.pluck" and "_.where" style callbacks.
@@ -1266,7 +1307,8 @@
             case float32Class: case float64Class:
             case int8Class: case int16Class: case int32Class:
             case uint8Class: case uint8ClampedClass: case uint16Class: case uint32Class:
-              return new Ctor(cloneBuffer(value.buffer), value.byteOffset, value.length);
+              var buffer = value.buffer;
+              return new Ctor(isDeep ? cloneBuffer(buffer) : buffer, value.byteOffset, value.length);
 
             case numberClass:
             case stringClass:
@@ -1342,18 +1384,7 @@
      * sets its metadata.
      *
      * @private
-     * @param {Array} data The metadata array.
-     * @param {Function|string} data[0] The function or method name to reference.
-     * @param {number} data[1] The bitmask of flags to compose. See `createWrapper`
-     *  for more details.
-     * @param {number} data[2] The arity of `data[0]`.
-     * @param {*} [data[3]] The `this` binding of `data[0]`.
-     * @param {Array} [data[4]] An array of arguments to prepend to those
-     *  provided to the new function.
-     * @param {Array} [data[5]] An array of arguments to append to those
-     *  provided to the new function.
-     * @param {Array} [data[6]] An array of `data[4]` placeholder indexes.
-     * @param {Array} [data[7]] An array of `data[5]` placeholder indexes.
+     * @param {Array} data The metadata array. See `createWrapper` for more details.
      * @returns {Function} Returns the new function.
      */
     function baseCreateWrapper(data) {
@@ -1361,7 +1392,7 @@
       if (bitmask == BIND_FLAG) {
         return setData(createBindWrapper(data), data);
       }
-      var partialHolders = data[6];
+      var partialHolders = data[5];
       if ((bitmask == PARTIAL_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG)) && !partialHolders.length) {
         return setData(createPartialWrapper(data), data);
       }
@@ -1369,7 +1400,7 @@
           arity = data[2],
           thisArg = data[3],
           partialArgs = data[4],
-          partialRightArgs = data[5],
+          partialRightArgs = data[6],
           partialRightHolders = data[7];
 
       var isBind = bitmask & BIND_FLAG,
@@ -1396,7 +1427,9 @@
           args = composeArgsRight(partialRightArgs, partialRightHolders, args);
         }
         if (isCurry || isCurryRight) {
-          var newPartialHolders = getHolders(args);
+          var placeholder = wrapper.placeholder,
+              newPartialHolders = getHolders(args, placeholder);
+
           length -= newPartialHolders.length;
 
           if (length < arity) {
@@ -1406,10 +1439,13 @@
             if (!isCurryBound) {
               bitmask &= ~(BIND_FLAG | BIND_KEY_FLAG);
             }
-            var newData = [func, bitmask, nativeMax(arity - length, 0), thisArg];
-            newData[isCurry ? 4 : 5] = args;
-            newData[isCurry ? 6 : 7] = newPartialHolders;
-            return baseCreateWrapper(newData);
+            var newData = [func, bitmask, nativeMax(arity - length, 0), thisArg, null, null];
+            newData[isCurry ? 4 : 6] = args;
+            newData[isCurry ? 5 : 7] = newPartialHolders;
+
+            var result = baseCreateWrapper(newData);
+            result.placeholder = placeholder;
+            return result;
           }
         }
         var thisBinding = isBind ? thisArg : this;
@@ -1436,7 +1472,7 @@
       if (typeof arity != 'number') {
         arity = +arity || (func ? func.length : 0);
       }
-      return createWrapper(func, bitmask, arity);
+      return createWrapper([func, bitmask, arity]);
     }
 
     /**
@@ -2059,15 +2095,19 @@
      * @param {*} [thisArg] The `this` binding of `func`.
      * @returns {Function} Returns the new partially applied function.
      */
-    function basePartial(func, bitmask, args, thisArg) {
+    function basePartial(func, bitmask, args, holders, thisArg) {
       if (func) {
         var data = func[EXPANDO],
             arity = data ? data[2] : func.length;
 
         arity -= args.length;
       }
-      var isPartial = bitmask & PARTIAL_FLAG;
-      return createWrapper(func, bitmask, arity, thisArg, isPartial && args, !isPartial && args);
+      var isPartial = bitmask & PARTIAL_FLAG,
+          newData = [func, bitmask, arity, thisArg, null, null];
+
+      newData[isPartial ? 4 : 6] = args;
+      newData[isPartial ? 5 : 7] = holders;
+      return createWrapper(newData);
     }
 
     /**
@@ -2424,9 +2464,7 @@
      * with its associated `this` binding.
      *
      * @private
-     * @param {Array} data The metadata array.
-     * @param {Function|string} data[0] The function or method name to reference.
-     * @param {*} data[3] The `this` binding of `data[0]`.
+     * @param {Array} data The metadata array. See `createWrapper` for more details.
      * @returns {Function} Returns the new bound function.
      */
     function createBindWrapper(data) {
@@ -2505,22 +2543,15 @@
      * with its associated partially applied arguments and optional `this` binding.
      *
      * @private
-     * @param {Array} data The metadata array.
-     * @param {Function|string} data[0] The function or method name to reference.
-     * @param {number} data[1] The bitmask of flags to compose. See `createWrapper`
-     *  for more details.
-     * @param {*} [data[3]] The `this` binding of `data[0]`.
-     * @param {Array} data[4] An array of arguments to prepend to those
-     *  provided to the new function.
+     * @param {Array} data The metadata array. See `createWrapper` for more details.
      * @returns {Function} Returns the new bound function.
      */
     function createPartialWrapper(data) {
       var func = data[0],
-          bitmask = data[1],
           thisArg = data[3],
           partialArgs = data[4];
 
-      var isBind = bitmask & BIND_FLAG,
+      var isBind = data[1] & BIND_FLAG,
           Ctor = createCtorWrapper(func);
 
       function wrapper() {
@@ -2544,29 +2575,35 @@
     }
 
     /**
-     * Creates a function that either curries or invokes `func` with an optional
+     * Creates a function that either curries or invokes `func` with optional
      * `this` binding and partially applied arguments.
      *
      * @private
-     * @param {Function|string} func The function or method name to reference.
-     * @param {number} bitmask The bitmask of flags to compose.
+     * @param {Array} data The metadata array.
+     * @param {Function|string} data[0] The function or method name to reference.
+     * @param {number} data[1] The bitmask of flags to compose.
      *  The bitmask may be composed of the following flags:
-     *  1  - `_.bind`
-     *  2  - `_.bindKey`
-     *  4  - `_.curry`
-     *  8  - `_.curryRight`
-     *  16 - `_.curry` or `_.curryRight` of a bound function
-     *  32 - `_.partial`
-     *  64 - `_.partialRight`
-     * @param {number} [arity] The arity of `func`.
-     * @param {*} [thisArg] The `this` binding of `func`.
-     * @param {Array} [partialArgs] An array of arguments to prepend to those
+     *   1  - `_.bind`
+     *   2  - `_.bindKey`
+     *   4  - `_.curry`
+     *   8  - `_.curryRight`
+     *   16 - `_.curry` or `_.curryRight` of a bound function
+     *   32 - `_.partial`
+     *   64 - `_.partialRight`
+     * @param {number} data[2] The arity of `data[0]`.
+     * @param {*} [data[3]] The `this` binding of `data[0]`.
+     * @param {Array} [data[4]] An array of arguments to prepend to those
      *  provided to the new function.
-     * @param {Array} [partialRightArgs] An array of arguments to append to those
+     * @param {Array} [data[5]] An array of `data[4]` placeholder indexes.
+     * @param {Array} [data[6]] An array of arguments to append to those
      *  provided to the new function.
+     * @param {Array} [data[7]] An array of `data[6]` placeholder indexes.
      * @returns {Function} Returns the new function.
      */
-    function createWrapper(func, bitmask, arity, thisArg, partialArgs, partialRightArgs) {
+    function createWrapper(data) {
+      var func = data[0],
+          bitmask = data[1];
+
       var isBind = bitmask & BIND_FLAG,
           isBindKey = bitmask & BIND_KEY_FLAG,
           isPartial = bitmask & PARTIAL_FLAG,
@@ -2575,35 +2612,43 @@
       if (!isBindKey && !isFunction(func)) {
         throw new TypeError(FUNC_ERROR_TEXT);
       }
+      var arity = data[2],
+          partialArgs = data[4],
+          partialRightArgs = data[6];
+
       if (isPartial && !partialArgs.length) {
-        bitmask &= ~PARTIAL_FLAG;
-        isPartial = partialArgs = false;
+        isPartial = false;
+        data[1] = (bitmask &= ~PARTIAL_FLAG);
+        data[4] = data[5] = partialArgs = null;
       }
       if (isPartialRight && !partialRightArgs.length) {
-        bitmask &= ~PARTIAL_RIGHT_FLAG;
-        isPartialRight = partialRightArgs = false;
+        isPartialRight = false;
+        data[1] = (bitmask &= ~PARTIAL_RIGHT_FLAG);
+        data[6] = data[7] = partialRightArgs = null;
       }
-      var data = !isBindKey && func[EXPANDO];
-      if (data && data !== true) {
-        // shallow clone `data`
-        data = slice(data);
+      var funcData = !isBindKey && func[EXPANDO];
+      if (funcData && funcData !== true) {
+        // shallow clone `funcData`
+        funcData = slice(funcData);
 
         // clone partial left arguments
-        if (data[4]) {
-          data[4] = slice(data[4]);
+        if (funcData[4]) {
+          funcData[4] = slice(funcData[4]);
+          funcData[5] = slice(funcData[5]);
         }
         // clone partial right arguments
-        if (data[5]) {
-          data[5] = slice(data[5]);
+        if (funcData[6]) {
+          funcData[6] = slice(funcData[6]);
+          funcData[7] = slice(funcData[7]);
         }
         // set arity if provided
         if (typeof arity == 'number') {
-          data[2] = arity;
+          funcData[2] = arity;
         }
         // set `thisArg` if not previously bound
-        var bound = data[1] & BIND_FLAG;
+        var bound = funcData[1] & BIND_FLAG;
         if (isBind && !bound) {
-          data[3] = thisArg;
+          funcData[3] = data[3];
         }
         // set if currying a bound function
         if (!isBind && bound) {
@@ -2611,35 +2656,39 @@
         }
         // append partial left arguments
         if (isPartial) {
-          if (data[4]) {
-            push.apply(data[4], partialArgs);
+          var partialHolders = data[5],
+              funcPartialArgs = funcData[4];
+
+          if (funcPartialArgs) {
+            appendHolders(funcData[5], partialHolders, funcPartialArgs.length);
+            push.apply(funcPartialArgs, partialArgs);
           } else {
-            data[4] = partialArgs;
+            funcData[4] = partialArgs;
+            funcData[5] = partialHolders;
           }
         }
         // prepend partial right arguments
         if (isPartialRight) {
-          if (data[5]) {
-            unshift.apply(data[5], partialRightArgs);
+          var partialRightHolders = data[7],
+              funcPartialRightArgs = funcData[6];
+
+          if (funcPartialRightArgs) {
+            appendHolders(funcData[7], partialRightHolders, funcPartialRightArgs.length);
+            unshift.apply(funcPartialRightArgs, partialRightArgs);
           } else {
-            data[5] = partialRightArgs;
+            funcData[6] = partialRightArgs;
+            funcData[7] = partialRightHolders;
           }
         }
         // merge flags
-        data[1] |= bitmask;
-        return createWrapper.apply(undefined, data);
-      }
-      if (isPartial) {
-        var partialHolders = getHolders(partialArgs);
-      }
-      if (isPartialRight) {
-        var partialRightHolders = getHolders(partialRightArgs);
+        funcData[1] |= bitmask;
+        return createWrapper(funcData);
       }
       if (arity == null) {
         arity = isBindKey ? 0 : func.length;
       }
-      arity = nativeMax(arity, 0);
-      return baseCreateWrapper([func, bitmask, arity, thisArg, partialArgs, partialRightArgs, partialHolders, partialRightHolders]);
+      data[2] = nativeMax(arity, 0);
+      return baseCreateWrapper(data);
     }
 
     /**
@@ -2664,13 +2713,13 @@
      * @param {Array} array The array to inspect.
      * @returns {Array} Returns the new array of placeholder indexes.
      */
-    function getHolders(array) {
+    function getHolders(array, placeholder) {
       var index = -1,
           length = array.length,
           result = [];
 
       while (++index < length) {
-        if (array[index] === lodash) {
+        if (array[index] === placeholder) {
           result.push(index);
         }
       }
@@ -2864,8 +2913,8 @@
      * Converts `collection` to an array if it is not an array-like value.
      *
      * @private
-     * @param {Array|Object|string} collection The collection to inspect.
-     * @returns {Array|Object} Returns the iterable object.
+     * @param {Array|Object|string} collection The collection to process.
+     * @returns {Array} Returns the iterable object.
      */
     function toIterable(collection) {
       var length = collection ? collection.length : 0;
@@ -3285,6 +3334,24 @@
       return baseFlatten(array, isDeep);
     }
 
+    /**
+     * Recursively flattens a nested array.
+     *
+     * @static
+     * @memberOf _
+     * @category Array
+     * @param {Array} array The array to recursively flatten.
+     * @returns {Array} Returns the new flattened array.
+     * @example
+     *
+     * _.flattenDeep([1, [2], [3, [[4]]]]);
+     * // => [1, 2, 3, 4];
+     */
+    function flattenDeep(array) {
+      var length = array ? array.length : 0;
+      return length ? baseFlatten(array, true) : [];
+    }
+
     /**
      * Gets the index at which the first occurrence of `value` is found in `array`
      * using strict equality for comparisons, i.e. `===`. If `fromIndex` is negative,
@@ -5444,9 +5511,13 @@
      * // => 'hi fred'
      */
     function bind(func, thisArg) {
-      return arguments.length < 3
-        ? createWrapper(func, BIND_FLAG, null, thisArg)
-        : basePartial(func, BIND_FLAG | PARTIAL_FLAG, slice(arguments, 2), thisArg);
+      if (arguments.length < 3) {
+        return createWrapper([func, BIND_FLAG, null, thisArg]);
+      }
+      var args = slice(arguments, 2),
+          partialHolders = getHolders(args, bind.placeholder);
+
+      return basePartial(func, BIND_FLAG | PARTIAL_FLAG, args, partialHolders, thisArg);
     }
 
     /**
@@ -5483,26 +5554,6 @@
       );
     }
 
-    /**
-     * 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 = methodNames[index];
-        object[key] = createWrapper(object[key], BIND_FLAG, null, object);
-      }
-      return object;
-    }
-
     /**
      * Creates a function that invokes the method at `object[key]` and prepends
      * any additional `bindKey` arguments to those provided to the bound function.
@@ -5539,9 +5590,12 @@
      * // => 'hiya fred!'
      */
     function bindKey(object, key) {
-      return arguments.length < 3
-        ? createWrapper(key, BIND_FLAG | BIND_KEY_FLAG, null, object)
-        : createWrapper(key, BIND_FLAG | BIND_KEY_FLAG | PARTIAL_FLAG, null, object, slice(arguments, 2));
+      var data = [key, BIND_FLAG | BIND_KEY_FLAG, null, object];
+      if (arguments.length > 2) {
+        var args = slice(arguments, 2);
+        data.push(args, getHolders(args, bindKey.placeholder));
+      }
+      return createWrapper(data);
     }
 
     /**
@@ -5629,7 +5683,9 @@
      * // => [1, 2, 3]
      */
     function curry(func, arity) {
-      return baseCurry(func, CURRY_FLAG, arity);
+      var result = baseCurry(func, CURRY_FLAG, arity);
+      result.placeholder = curry.placeholder;
+      return result;
     }
 
     /**
@@ -5660,7 +5716,9 @@
      * // => [1, 2, 3]
      */
     function curryRight(func, arity) {
-      return baseCurry(func, CURRY_RIGHT_FLAG, arity);
+      var result = baseCurry(func, CURRY_RIGHT_FLAG, arity);
+      result.placeholder = curryRight.placeholder;
+      return result;
     }
 
     /**
@@ -5675,6 +5733,9 @@
      * the trailing edge of the timeout only if the the debounced function is
      * invoked more than once during the `wait` timeout.
      *
+     * See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation)
+     * for details over the differences between `_.debounce` and `_.throttle`.
+     *
      * @static
      * @memberOf _
      * @category Function
@@ -6006,7 +6067,10 @@
      * // => 'hello fred'
      */
     function partial(func) {
-      return basePartial(func, PARTIAL_FLAG, slice(arguments, 1));
+      var args = slice(arguments, 1),
+          partialHolders = getHolders(args, partial.placeholder);
+
+      return basePartial(func, PARTIAL_FLAG, args, partialHolders);
     }
 
     /**
@@ -6041,7 +6105,10 @@
      * // => { 'a': { 'b': { 'c': 1, 'd': 2 } } }
      */
     function partialRight(func) {
-      return basePartial(func, PARTIAL_RIGHT_FLAG, slice(arguments, 1));
+      var args = slice(arguments, 1),
+          partialHolders = getHolders(args, partialRight.placeholder);
+
+      return basePartial(func, PARTIAL_RIGHT_FLAG, args, partialHolders);
     }
 
     /**
@@ -6056,6 +6123,9 @@
      * the trailing edge of the timeout only if the the throttled function is
      * invoked more than once during the `wait` timeout.
      *
+     * See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation)
+     * for details over the differences between `_.throttle` and `_.debounce`.
+     *
      * @static
      * @memberOf _
      * @category Function
@@ -6095,7 +6165,6 @@
       debounceOptions.leading = leading;
       debounceOptions.maxWait = +wait;
       debounceOptions.trailing = trailing;
-
       return debounce(func, wait, debounceOptions);
     }
 
@@ -6121,7 +6190,7 @@
      * // => '<p>fred, barney, &amp; pebbles</p>'
      */
     function wrap(value, wrapper) {
-      return createWrapper(wrapper, PARTIAL_FLAG, null, null, [value]);
+      return basePartial(wrapper, PARTIAL_FLAG, [value], []);
     }
 
     /*--------------------------------------------------------------------------*/
@@ -7872,6 +7941,7 @@
      * @param {RegExp} [options.interpolate] The "interpolate" delimiter.
      * @param {string} [options.sourceURL] The sourceURL of the template's compiled source.
      * @param {string} [options.variable] The data object variable name.
+     * @param- {Object} [otherOptions] Enables the legacy `options` param signature.
      * @returns {Function} Returns the compiled template function.
      * @example
      *
@@ -7939,13 +8009,13 @@
      *   };\
      * ');
      */
-    function template(string, options) {
+    function template(string, options, otherOptions) {
       // based on John Resig's `tmpl` implementation
       // http://ejohn.org/blog/javascript-micro-templating/
       // and Laura Doktorova's doT.js
       // https://github.com/olado/doT
       var settings = lodash.templateSettings;
-      options = assign({}, options, settings, assignOwnDefaults);
+      options = assign({}, otherOptions || options, settings, assignOwnDefaults);
       string = String(string == null ? '' : string);
 
       var imports = assign({}, options.imports, settings.imports, assignOwnDefaults),
@@ -8818,6 +8888,9 @@
     // ensure `new lodashWrapper` is an instance of `lodash`
     lodashWrapper.prototype = lodash.prototype;
 
+    // assign default placeholders
+    bind.placeholder = bindKey.placeholder = curry.placeholder = curryRight.placeholder = partial.placeholder = partialRight.placeholder = lodash;
+
     // add functions that return wrapped values when chaining
     lodash.after = after;
     lodash.assign = assign;
@@ -8847,6 +8920,7 @@
     lodash.dropWhile = dropWhile;
     lodash.filter = filter;
     lodash.flatten = flatten;
+    lodash.flattenDeep = flattenDeep;
     lodash.forEach = forEach;
     lodash.forEachRight = forEachRight;
     lodash.forIn = forIn;
diff --git a/dist/lodash.min.js b/dist/lodash.min.js
index deb007571..c3417fbd8 100644
--- a/dist/lodash.min.js
+++ b/dist/lodash.min.js
@@ -4,66 +4,67 @@
  * Build: `lodash modern -o ./dist/lodash.js`
  */
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+if(r=n.slice(0,o),null==u)return r+e;if(ge(u)){if(n.slice(o).search(u)){var i,f,a=n.slice(0,o);for(u.global||(u=Ue(u.source,(z.exec(u)||"")+"g")),u.lastIndex=0;i=u.exec(a);)f=i.index;r=r.slice(0,null==f?o:f)}}else n.indexOf(u,o)!=o&&(u=r.lastIndexOf(u),-1<u&&(r=r.slice(0,u)));return r+e},h.unescape=function(n){return n=null==n?"":We(n),N.lastIndex=0,N.test(n)?n.replace(N,y):n},h.uniqueId=function(n){var t=++C;return We(null==n?"":n)+t},h.all=Dr,h.any=Gr,h.detect=zr,h.foldl=Yr,h.foldr=Jr,h.head=kr,h.include=Br,h.inject=Yr,Ee(h,function(){var n={};
+return Xt(h,function(t,r){h.prototype[r]||(n[r]=t)}),n}(),false),h.sample=function(n,t,r){n=Or(n);var e=n.length;return null==t||r?0<e?n[or(0,e-1)]:m:(n=Xr(n),n.length=hu(0>t?0:+t||0,n.length),n)},Xt(h,function(n,t){var r="sample"!=t;h.prototype[t]||(h.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 K(o,u):o})}),h.VERSION=_,h.prototype.chain=function(){return this.__chain__=true,this},h.prototype.toJSON=$r,h.prototype.toString=function(){return We(this.__wrapped__)
+},h.prototype.value=$r,h.prototype.valueOf=$r,At(["join","pop","shift"],function(n){var t=Le[n];h.prototype[n]=function(){var n=this.__chain__,r=t.apply(this.__wrapped__,arguments);return n?new K(r,n):r}}),At(["push","reverse","sort","unshift"],function(n){var t=Le[n];h.prototype[n]=function(){return t.apply(this.__wrapped__,arguments),this}}),At(["concat","splice"],function(n){var t=Le[n];h.prototype[n]=function(){return new K(t.apply(this.__wrapped__,arguments),this.__chain__)}}),h}var m,_="3.0.0-pre",b=1,w=2,j=4,A=8,x=16,E=32,I=64,O="__lodash@"+_+"__",R="Expected a function",k=Math.pow(2,32)-1,S=Math.pow(2,53)-1,C=0,F=/^[A-Z]+$/,T=/\b__p\+='';/g,U=/\b(__p\+=)''\+/g,W=/(__e\(.*?\)|\b__t\))\+'';/g,N=/&(?:amp|lt|gt|quot|#39|#96);/g,L=/[&<>"'`]/g,$=/<%-([\s\S]+?)%>/g,B=/<%([\s\S]+?)%>/g,D=/<%=([\s\S]+?)%>/g,M=/\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g,z=/\w*$/,q=/^\s*function[ \n\r\t]+\w/,P=/^0[xX]/,Z=/^\[object .+?Constructor\]$/,K=/[\xC0-\xFF]/g,V=/($^)/,Y=/[.*+?^${}()|[\]\/\\]/g,J=/\bthis\b/,X=/['\n\r\u2028\u2029\\]/g,G=/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g,H=" \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",Q="Array ArrayBuffer Date Error Float32Array Float64Array Function Int8Array Int16Array Int32Array Math Number Object RegExp Set String _ clearTimeout document isFinite parseInt setTimeout TypeError Uint8Array Uint8ClampedArray Uint16Array Uint32Array window WinRTError".split(" "),nt="[object Arguments]",tt="[object Array]",rt="[object Boolean]",et="[object Date]",ut="[object Error]",ot="[object Number]",it="[object Object]",ft="[object RegExp]",at="[object String]",ct="[object ArrayBuffer]",lt="[object Float32Array]",pt="[object Float64Array]",st="[object Int8Array]",ht="[object Int16Array]",gt="[object Int32Array]",vt="[object Uint8Array]",yt="[object Uint8ClampedArray]",dt="[object Uint16Array]",mt="[object Uint32Array]",_t={};
+_t[nt]=_t[tt]=_t[lt]=_t[pt]=_t[st]=_t[ht]=_t[gt]=_t[vt]=_t[yt]=_t[dt]=_t[mt]=true,_t[ct]=_t[rt]=_t[et]=_t[ut]=_t["[object Function]"]=_t["[object Map]"]=_t[ot]=_t[it]=_t[ft]=_t["[object Set]"]=_t[at]=_t["[object WeakMap]"]=false;var bt={};bt[nt]=bt[tt]=bt[ct]=bt[rt]=bt[et]=bt[lt]=bt[pt]=bt[st]=bt[ht]=bt[gt]=bt[ot]=bt[it]=bt[ft]=bt[at]=bt[vt]=bt[yt]=bt[dt]=bt[mt]=true,bt[ut]=bt["[object Function]"]=bt["[object Map]"]=bt["[object Set]"]=bt["[object WeakMap]"]=false;var wt={leading:false,maxWait:0,trailing:false},jt={configurable:false,enumerable:false,value:null,writable:false},At={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;","`":"&#96;"},xt={"&amp;":"&","&lt;":"<","&gt;":">","&quot;":'"',"&#39;":"'","&#96;":"`"},Et={"\xc0":"A","\xc1":"A","\xc2":"A","\xc3":"A","\xc4":"A","\xc5":"A","\xe0":"a","\xe1":"a","\xe2":"a","\xe3":"a","\xe4":"a","\xe5":"a","\xc7":"C","\xe7":"c","\xd0":"D","\xf0":"d","\xc8":"E","\xc9":"E","\xca":"E","\xcb":"E","\xe8":"e","\xe9":"e","\xea":"e","\xeb":"e","\xcc":"I","\xcd":"I","\xce":"I","\xcf":"I","\xec":"i","\xed":"i","\xee":"i","\xef":"i","\xd1":"N","\xf1":"n","\xd2":"O","\xd3":"O","\xd4":"O","\xd5":"O","\xd6":"O","\xd8":"O","\xf2":"o","\xf3":"o","\xf4":"o","\xf5":"o","\xf6":"o","\xf8":"o","\xd9":"U","\xda":"U","\xdb":"U","\xdc":"U","\xf9":"u","\xfa":"u","\xfb":"u","\xfc":"u","\xdd":"Y","\xfd":"y","\xff":"y","\xc6":"AE","\xe6":"ae","\xde":"Th","\xfe":"th","\xdf":"ss","\xd7":" ","\xf7":" "},It={"function":true,object:true},Ot={"\\":"\\","'":"'","\n":"n","\r":"r","\u2028":"u2028","\u2029":"u2029"},Rt=It[typeof window]&&window||this,kt=It[typeof exports]&&exports&&!exports.nodeType&&exports,It=It[typeof module]&&module&&!module.nodeType&&module,St=kt&&It&&typeof global=="object"&&global;
+!St||St.global!==St&&St.window!==St&&St.self!==St||(Rt=St);var St=It&&It.exports===kt&&kt,Ct=d();typeof define=="function"&&typeof define.amd=="object"&&define.amd?(Rt._=Ct, define(function(){return Ct})):kt&&It?St?(It.exports=Ct)._=Ct:kt._=Ct:Rt._=Ct}).call(this);
\ No newline at end of file
diff --git a/dist/lodash.underscore.js b/dist/lodash.underscore.js
index e4b0cc546..9ec0d3894 100644
--- a/dist/lodash.underscore.js
+++ b/dist/lodash.underscore.js
@@ -327,14 +327,14 @@
    * `chain`, `chunk`, `compact`, `compose`, `concat`, `constant`, `countBy`,
    * `create`, `curry`, `debounce`, `defaults`, `defer`, `delay`, `difference`,
    * `drop`, `dropRight`, `dropRightWhile`, `dropWhile`, `filter`, `flatten`,
-   * `forEach`, `forEachRight`, `forIn`, `forInRight`, `forOwn`, `forOwnRight`,
-   * `functions`, `groupBy`, `indexBy`, `initial`, `intersection`, `invert`,
-   * `invoke`, `keys`, `keysIn`, `map`, `mapValues`, `matches`, `memoize`, `merge`,
-   * `mixin`, `negate`, `noop`, `omit`, `once`, `pairs`, `partial`, `partialRight`,
-   * `partition`, `pick`, `pluck`, `property`, `pull`, `pullAt`, `push`, `range`,
-   * `reject`, `remove`, `rest`, `reverse`, `shuffle`, `slice`, `sort`, `sortBy`,
-   * `splice`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, `tap`,
-   * `throttle`, `times`, `toArray`, `transform`, `union`, `uniq`, `unshift`,
+   * `flattenDeep`, `forEach`, `forEachRight`, `forIn`, `forInRight`, `forOwn`,
+   * `forOwnRight`, `functions`, `groupBy`, `indexBy`, `initial`, `intersection`,
+   * `invert`, `invoke`, `keys`, `keysIn`, `map`, `mapValues`, `matches`, `memoize`,
+   * `merge`, `mixin`, `negate`, `noop`, `omit`, `once`, `pairs`, `partial`,
+   * `partialRight`, `partition`, `pick`, `pluck`, `property`, `pull`, `pullAt`,
+   * `push`, `range`, `reject`, `remove`, `rest`, `reverse`, `shuffle`, `slice`,
+   * `sort`, `sortBy`, `splice`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`,
+   * `tap`, `throttle`, `times`, `toArray`, `transform`, `union`, `uniq`, `unshift`,
    * `unzip`, `values`, `valuesIn`, `where`, `without`, `wrap`, `xor`, `zip`,
    * and `zipObject`
    *
@@ -484,7 +484,7 @@
    */
   function arrayEach(array, iterator) {
     var index = -1,
-        length = array ? array.length : 0;
+        length = array.length;
 
     while (++index < length) {
       if (iterator(array[index], index, array) === breakIndicator) {
@@ -527,7 +527,7 @@
    */
   function arrayMap(array, iterator) {
     var index = -1,
-        length = array ? array.length : 0,
+        length = array.length,
         result = Array(length);
 
     while (++index < length) {
@@ -630,6 +630,26 @@
     return false;
   }
 
+  /**
+   * 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 = methodNames[index];
+      object[key] = createWrapper([object[key], BIND_FLAG, null, object]);
+    }
+    return object;
+  }
+
   /**
    * The base implementation of `_.callback` without support for creating
    * "_.pluck" and "_.where" style callbacks.
@@ -703,18 +723,7 @@
    * sets its metadata.
    *
    * @private
-   * @param {Array} data The metadata array.
-   * @param {Function|string} data[0] The function or method name to reference.
-   * @param {number} data[1] The bitmask of flags to compose. See `createWrapper`
-   *  for more details.
-   * @param {number} data[2] The arity of `data[0]`.
-   * @param {*} [data[3]] The `this` binding of `data[0]`.
-   * @param {Array} [data[4]] An array of arguments to prepend to those
-   *  provided to the new function.
-   * @param {Array} [data[5]] An array of arguments to append to those
-   *  provided to the new function.
-   * @param {Array} [data[6]] An array of `data[4]` placeholder indexes.
-   * @param {Array} [data[7]] An array of `data[5]` placeholder indexes.
+   * @param {Array} data The metadata array. See `createWrapper` for more details.
    * @returns {Function} Returns the new function.
    */
   function baseCreateWrapper(data) {
@@ -722,7 +731,7 @@
     if (bitmask == BIND_FLAG) {
       return createBindWrapper(data);
     }
-    var partialHolders = data[6];
+    var partialHolders = data[5];
     if ((bitmask == PARTIAL_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG)) && !partialHolders.length) {
       return createPartialWrapper(data);
     }
@@ -730,7 +739,7 @@
         arity = data[2],
         thisArg = data[3],
         partialArgs = data[4],
-        partialRightArgs = data[5];
+        partialRightArgs = data[6];
 
     var isBind = bitmask & BIND_FLAG,
         isBindKey = bitmask & BIND_KEY_FLAG,
@@ -1227,9 +1236,19 @@
    * @param {*} [thisArg] The `this` binding of `func`.
    * @returns {Function} Returns the new partially applied function.
    */
-  function basePartial(func, bitmask, args, thisArg) {
-    var isPartial = bitmask & PARTIAL_FLAG;
-    return createWrapper(func, bitmask, null, thisArg, isPartial && args, !isPartial && args);
+  function basePartial(func, bitmask, args, holders, thisArg) {
+    if (func) {
+      var data = func[EXPANDO],
+          arity = data ? data[2] : func.length;
+
+      arity -= args.length;
+    }
+    var isPartial = bitmask & PARTIAL_FLAG,
+        newData = [func, bitmask, arity, thisArg, null, null];
+
+    newData[isPartial ? 4 : 6] = args;
+    newData[isPartial ? 5 : 7] = holders;
+    return createWrapper(newData);
   }
 
   /**
@@ -1474,9 +1493,7 @@
    * with its associated `this` binding.
    *
    * @private
-   * @param {Array} data The metadata array.
-   * @param {Function|string} data[0] The function or method name to reference.
-   * @param {*} data[3] The `this` binding of `data[0]`.
+   * @param {Array} data The metadata array. See `createWrapper` for more details.
    * @returns {Function} Returns the new bound function.
    */
   function createBindWrapper(data) {
@@ -1514,22 +1531,15 @@
    * with its associated partially applied arguments and optional `this` binding.
    *
    * @private
-   * @param {Array} data The metadata array.
-   * @param {Function|string} data[0] The function or method name to reference.
-   * @param {number} data[1] The bitmask of flags to compose. See `createWrapper`
-   *  for more details.
-   * @param {*} [data[3]] The `this` binding of `data[0]`.
-   * @param {Array} data[4] An array of arguments to prepend to those
-   *  provided to the new function.
+   * @param {Array} data The metadata array. See `createWrapper` for more details.
    * @returns {Function} Returns the new bound function.
    */
   function createPartialWrapper(data) {
     var func = data[0],
-        bitmask = data[1],
         thisArg = data[3],
         partialArgs = data[4];
 
-    var isBind = bitmask & BIND_FLAG,
+    var isBind = data[1] & BIND_FLAG,
         Ctor = createCtorWrapper(func);
 
     function wrapper() {
@@ -1553,29 +1563,35 @@
   }
 
   /**
-   * Creates a function that either curries or invokes `func` with an optional
+   * Creates a function that either curries or invokes `func` with optional
    * `this` binding and partially applied arguments.
    *
    * @private
-   * @param {Function|string} func The function or method name to reference.
-   * @param {number} bitmask The bitmask of flags to compose.
+   * @param {Array} data The metadata array.
+   * @param {Function|string} data[0] The function or method name to reference.
+   * @param {number} data[1] The bitmask of flags to compose.
    *  The bitmask may be composed of the following flags:
-   *  1  - `_.bind`
-   *  2  - `_.bindKey`
-   *  4  - `_.curry`
-   *  8  - `_.curryRight`
-   *  16 - `_.curry` or `_.curryRight` of a bound function
-   *  32 - `_.partial`
-   *  64 - `_.partialRight`
-   * @param {number} [arity] The arity of `func`.
-   * @param {*} [thisArg] The `this` binding of `func`.
-   * @param {Array} [partialArgs] An array of arguments to prepend to those
+   *   1  - `_.bind`
+   *   2  - `_.bindKey`
+   *   4  - `_.curry`
+   *   8  - `_.curryRight`
+   *   16 - `_.curry` or `_.curryRight` of a bound function
+   *   32 - `_.partial`
+   *   64 - `_.partialRight`
+   * @param {number} data[2] The arity of `data[0]`.
+   * @param {*} [data[3]] The `this` binding of `data[0]`.
+   * @param {Array} [data[4]] An array of arguments to prepend to those
    *  provided to the new function.
-   * @param {Array} [partialRightArgs] An array of arguments to append to those
+   * @param {Array} [data[5]] An array of `data[4]` placeholder indexes.
+   * @param {Array} [data[6]] An array of arguments to append to those
    *  provided to the new function.
+   * @param {Array} [data[7]] An array of `data[6]` placeholder indexes.
    * @returns {Function} Returns the new function.
    */
-  function createWrapper(func, bitmask, arity, thisArg, partialArgs, partialRightArgs) {
+  function createWrapper(data) {
+    var func = data[0],
+        bitmask = data[1];
+
     var isBind = bitmask & BIND_FLAG,
         isBindKey = bitmask & BIND_KEY_FLAG,
         isPartial = bitmask & PARTIAL_FLAG,
@@ -1584,18 +1600,20 @@
     if (!isFunction(func)) {
       throw new TypeError(FUNC_ERROR_TEXT);
     }
+    var arity = data[2],
+        partialArgs = data[4],
+        partialRightArgs = data[6];
+
     if (isPartial && !partialArgs.length) {
-      bitmask &= ~PARTIAL_FLAG;
-      isPartial = partialArgs = false;
-    }
-    if (isPartial) {
-      var partialHolders = getHolders(partialArgs);
+      isPartial = false;
+      data[1] = (bitmask &= ~PARTIAL_FLAG);
+      data[4] = data[5] = partialArgs = null;
     }
     if (arity == null) {
       arity = isBindKey ? 0 : func.length;
     }
-    arity = nativeMax(arity, 0);
-    return baseCreateWrapper([func, bitmask, arity, thisArg, partialArgs, partialRightArgs, partialHolders]);
+    data[2] = nativeMax(arity, 0);
+    return baseCreateWrapper(data);
   }
 
   /**
@@ -1605,13 +1623,13 @@
    * @param {Array} array The array to inspect.
    * @returns {Array} Returns the new array of placeholder indexes.
    */
-  function getHolders(array) {
+  function getHolders(array, placeholder) {
     var index = -1,
         length = array.length,
         result = [];
 
     while (++index < length) {
-      if (array[index] === lodash) {
+      if (array[index] === placeholder) {
         result.push(index);
       }
     }
@@ -1701,8 +1719,8 @@
    * Converts `collection` to an array if it is not an array-like value.
    *
    * @private
-   * @param {Array|Object|string} collection The collection to inspect.
-   * @returns {Array|Object} Returns the iterable object.
+   * @param {Array|Object|string} collection The collection to process.
+   * @returns {Array} Returns the iterable object.
    */
   function toIterable(collection) {
     var length = collection ? collection.length : 0;
@@ -3635,8 +3653,8 @@
    */
   function bind(func, thisArg) {
     return arguments.length < 3
-      ? createWrapper(func, BIND_FLAG, null, thisArg)
-      : basePartial(func, BIND_FLAG | PARTIAL_FLAG, slice(arguments, 2), thisArg);
+      ? createWrapper([func, BIND_FLAG, null, thisArg])
+      : basePartial(func, BIND_FLAG | PARTIAL_FLAG, slice(arguments, 2), [], thisArg);
   }
 
   /**
@@ -3673,26 +3691,6 @@
     );
   }
 
-  /**
-   * 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 = methodNames[index];
-      object[key] = createWrapper(object[key], BIND_FLAG, null, object);
-    }
-    return object;
-  }
-
   /**
    * Creates a function that is the composition of the provided functions,
    * where each function consumes the return value of the function that follows.
@@ -3759,6 +3757,9 @@
    * the trailing edge of the timeout only if the the debounced function is
    * invoked more than once during the `wait` timeout.
    *
+   * See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation)
+   * for details over the differences between `_.debounce` and `_.throttle`.
+   *
    * @static
    * @memberOf _
    * @category Function
@@ -4088,7 +4089,10 @@
    * // => 'hello fred'
    */
   function partial(func) {
-    return basePartial(func, PARTIAL_FLAG, slice(arguments, 1));
+    var args = slice(arguments, 1),
+        partialHolders = getHolders(args, partial.placeholder);
+
+    return basePartial(func, PARTIAL_FLAG, args, partialHolders);
   }
 
   /**
@@ -4103,6 +4107,9 @@
    * the trailing edge of the timeout only if the the throttled function is
    * invoked more than once during the `wait` timeout.
    *
+   * See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation)
+   * for details over the differences between `_.throttle` and `_.debounce`.
+   *
    * @static
    * @memberOf _
    * @category Function
@@ -4168,7 +4175,7 @@
    * // => '<p>fred, barney, &amp; pebbles</p>'
    */
   function wrap(value, wrapper) {
-    return createWrapper(wrapper, PARTIAL_FLAG, null, null, [value]);
+    return basePartial(wrapper, PARTIAL_FLAG, [value], []);
   }
 
   /*--------------------------------------------------------------------------*/
@@ -5093,6 +5100,7 @@
    * @param {RegExp} [options.interpolate] The "interpolate" delimiter.
    * @param {string} [options.sourceURL] The sourceURL of the template's compiled source.
    * @param {string} [options.variable] The data object variable name.
+   * @param- {Object} [otherOptions] Enables the legacy `options` param signature.
    * @returns {Function} Returns the compiled template function.
    * @example
    *
@@ -5677,6 +5685,9 @@
   // ensure `new lodashWrapper` is an instance of `lodash`
   lodashWrapper.prototype = lodash.prototype;
 
+  // assign default placeholders
+  bind.placeholder = partial.placeholder = lodash;
+
   // add functions that return wrapped values when chaining
   lodash.after = after;
   lodash.bind = bind;
diff --git a/dist/lodash.underscore.min.js b/dist/lodash.underscore.min.js
index d7e8bef5d..98f796e74 100644
--- a/dist/lodash.underscore.min.js
+++ b/dist/lodash.underscore.min.js
@@ -3,43 +3,43 @@
  * Lo-Dash 3.0.0-pre (Custom Build) lodash.com/license | Underscore.js 1.6.0 underscorejs.org/LICENSE
  * Build: `lodash underscore -o ./dist/lodash.underscore.js`
  */
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