diff --git a/README.md b/README.md
index ff0783287..74c3bc5ef 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# lodash-es v3.0.1
+# lodash-es v3.1.0
 
 The [modern build](https://github.com/lodash/lodash/wiki/Build-Differences) of [lodash](https://lodash.com/) exported as [ES](https://people.mozilla.org/~jorendorff/es6-draft.html) modules.
 
@@ -6,3 +6,5 @@ Generated using [lodash-cli](https://www.npmjs.com/package/lodash-cli):
 ```bash
 $ lodash modularize modern exports=es -o ./
 ```
+
+See the [package source](https://github.com/lodash/lodash/tree/3.1.0-es) for more details.
diff --git a/chain/lodash.js b/chain/lodash.js
index 452e9284d..8c8c258c1 100644
--- a/chain/lodash.js
+++ b/chain/lodash.js
@@ -57,14 +57,14 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  * `findLast`, `findLastIndex`, `findLastKey`, `findWhere`, `first`, `has`,
  * `identity`, `includes`, `indexOf`, `isArguments`, `isArray`, `isBoolean`,
  * `isDate`, `isElement`, `isEmpty`, `isEqual`, `isError`, `isFinite`,
- * `isFunction`, `isMatch` , `isNative`, `isNaN`, `isNull`, `isNumber`,
+ * `isFunction`, `isMatch`, `isNative`, `isNaN`, `isNull`, `isNumber`,
  * `isObject`, `isPlainObject`, `isRegExp`, `isString`, `isUndefined`,
  * `isTypedArray`, `join`, `kebabCase`, `last`, `lastIndexOf`, `max`, `min`,
  * `noConflict`, `now`, `pad`, `padLeft`, `padRight`, `parseInt`, `pop`,
  * `random`, `reduce`, `reduceRight`, `repeat`, `result`, `runInContext`,
  * `shift`, `size`, `snakeCase`, `some`, `sortedIndex`, `sortedLastIndex`,
- * `startsWith`, `template`, `trim`, `trimLeft`, `trimRight`, `trunc`,
- * `unescape`, `uniqueId`, `value`, and `words`
+ * `startCase`, `startsWith`, `template`, `trim`, `trimLeft`, `trimRight`,
+ * `trunc`, `unescape`, `uniqueId`, `value`, and `words`
  *
  * The wrapper function `sample` will return a wrapped value when `n` is provided,
  * otherwise an unwrapped value is returned.
diff --git a/collection/findWhere.js b/collection/findWhere.js
index acf0ae049..bcc0fb0e6 100644
--- a/collection/findWhere.js
+++ b/collection/findWhere.js
@@ -1,5 +1,5 @@
+import baseMatches from '../internal/baseMatches';
 import find from './find';
-import matches from '../utility/matches';
 
 /**
  * Performs a deep comparison between each element in `collection` and the
@@ -26,7 +26,7 @@ import matches from '../utility/matches';
  * // => 'fred'
  */
 function findWhere(collection, source) {
-  return find(collection, matches(source));
+  return find(collection, baseMatches(source));
 }
 
 export default findWhere;
diff --git a/collection/pluck.js b/collection/pluck.js
index 5d8b004a1..e59665340 100644
--- a/collection/pluck.js
+++ b/collection/pluck.js
@@ -1,5 +1,5 @@
+import baseProperty from '../internal/baseProperty';
 import map from './map';
-import property from '../utility/property';
 
 /**
  * Gets the value of `key` from all elements in `collection`.
@@ -25,7 +25,7 @@ import property from '../utility/property';
  * // => [36, 40] (iteration order is not guaranteed)
  */
 function pluck(collection, key) {
-  return map(collection, property(key));
+  return map(collection, baseProperty(key + ''));
 }
 
 export default pluck;
diff --git a/collection/where.js b/collection/where.js
index ec7c9bcb1..4f5352290 100644
--- a/collection/where.js
+++ b/collection/where.js
@@ -1,5 +1,5 @@
+import baseMatches from '../internal/baseMatches';
 import filter from './filter';
-import matches from '../utility/matches';
 
 /**
  * Performs a deep comparison between each element in `collection` and the
@@ -29,7 +29,7 @@ import matches from '../utility/matches';
  * // => ['barney', 'fred']
  */
 function where(collection, source) {
-  return filter(collection, matches(source));
+  return filter(collection, baseMatches(source));
 }
 
 export default where;
diff --git a/internal/baseCallback.js b/internal/baseCallback.js
index 81a670125..6c7cce7ff 100644
--- a/internal/baseCallback.js
+++ b/internal/baseCallback.js
@@ -26,7 +26,7 @@ function baseCallback(func, thisArg, argCount) {
   }
   // Handle "_.property" and "_.matches" style callback shorthands.
   return type == 'object'
-    ? baseMatches(func, !argCount)
+    ? baseMatches(func)
     : baseProperty(func + '');
 }
 
diff --git a/internal/baseMatches.js b/internal/baseMatches.js
index b81853380..6ac3cb3dd 100644
--- a/internal/baseMatches.js
+++ b/internal/baseMatches.js
@@ -1,4 +1,3 @@
-import baseClone from './baseClone';
 import baseIsMatch from './baseIsMatch';
 import isStrictComparable from './isStrictComparable';
 import keys from '../object/keys';
@@ -15,10 +14,9 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  *
  * @private
  * @param {Object} source The object of property values to match.
- * @param {boolean} [isCloned] Specify cloning the source object.
  * @returns {Function} Returns the new function.
  */
-function baseMatches(source, isCloned) {
+function baseMatches(source) {
   var props = keys(source),
       length = props.length;
 
@@ -32,9 +30,6 @@ function baseMatches(source, isCloned) {
       };
     }
   }
-  if (isCloned) {
-    source = baseClone(source, true);
-  }
   var values = Array(length),
       strictCompareFlags = Array(length);
 
diff --git a/internal/isIndex.js b/internal/isIndex.js
index 6df32fd13..8a62990db 100644
--- a/internal/isIndex.js
+++ b/internal/isIndex.js
@@ -1,6 +1,6 @@
 /**
  * Used as the maximum length of an array-like value.
- * See the [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength)
+ * See the [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.max_safe_integer)
  * for more details.
  */
 var MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;
diff --git a/internal/isIterateeCall.js b/internal/isIterateeCall.js
index 9e0164885..4b8498fd5 100644
--- a/internal/isIterateeCall.js
+++ b/internal/isIterateeCall.js
@@ -20,7 +20,7 @@ function isIterateeCall(value, index, object) {
     var length = object.length,
         prereq = isLength(length) && isIndex(index, length);
   } else {
-    prereq = type == 'string' && index in value;
+    prereq = type == 'string' && index in object;
   }
   return prereq && object[index] === value;
 }
diff --git a/internal/isLength.js b/internal/isLength.js
index 792f027fc..137f33a77 100644
--- a/internal/isLength.js
+++ b/internal/isLength.js
@@ -1,6 +1,6 @@
 /**
  * Used as the maximum length of an array-like value.
- * See the [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength)
+ * See the [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.max_safe_integer)
  * for more details.
  */
 var MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;
@@ -8,6 +8,10 @@ var MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;
 /**
  * Checks if `value` is a valid array-like length.
  *
+ * **Note:** This function is based on ES `ToLength`. See the
+ * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength)
+ * for more details.
+ *
  * @private
  * @param {*} value The value to check.
  * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
diff --git a/lodash.js b/lodash.js
index db59c5f73..32faa2aaa 100644
--- a/lodash.js
+++ b/lodash.js
@@ -1,6 +1,6 @@
 /**
  * @license
- * lodash 3.0.1 (Custom Build) <https://lodash.com/>
+ * lodash 3.1.0 (Custom Build) <https://lodash.com/>
  * Build: `lodash modularize modern exports="es" -o ./`
  * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
  * Based on Underscore.js 1.7.0 <http://underscorejs.org/LICENSE>
@@ -23,6 +23,8 @@ import arrayEach from './internal/arrayEach';
 import baseCallback from './internal/baseCallback';
 import baseForOwn from './internal/baseForOwn';
 import baseFunctions from './internal/baseFunctions';
+import baseMatches from './internal/baseMatches';
+import baseProperty from './internal/baseProperty';
 import isArray from './lang/isArray';
 import isObject from './lang/isObject';
 import keys from './object/keys';
@@ -30,14 +32,12 @@ import lazyClone from './internal/lazyClone';
 import lazyReverse from './internal/lazyReverse';
 import lazyValue from './internal/lazyValue';
 import lodash from './chain/lodash';
-import matches from './utility/matches';
 import _mixin from './utility/mixin';
-import property from './utility/property';
 import support from './support';
 import thru from './chain/thru';
 
 /** Used as the semantic version number. */
-var VERSION = '3.0.1';
+var VERSION = '3.1.0';
 
 /** Used to indicate the type of lazy iteratees. */
 var LAZY_FILTER_FLAG = 0,
@@ -121,7 +121,7 @@ lodash.keys = keys;
 lodash.keysIn = object.keysIn;
 lodash.map = collection.map;
 lodash.mapValues = object.mapValues;
-lodash.matches = matches;
+lodash.matches = utility.matches;
 lodash.memoize = func.memoize;
 lodash.merge = object.merge;
 lodash.mixin = mixin;
@@ -134,7 +134,7 @@ lodash.partialRight = func.partialRight;
 lodash.partition = collection.partition;
 lodash.pick = object.pick;
 lodash.pluck = collection.pluck;
-lodash.property = property;
+lodash.property = utility.property;
 lodash.propertyOf = utility.propertyOf;
 lodash.pull = array.pull;
 lodash.pullAt = array.pullAt;
@@ -252,6 +252,7 @@ lodash.snakeCase = string.snakeCase;
 lodash.some = collection.some;
 lodash.sortedIndex = array.sortedIndex;
 lodash.sortedLastIndex = array.sortedLastIndex;
+lodash.startCase = string.startCase;
 lodash.startsWith = string.startsWith;
 lodash.template = string.template;
 lodash.trim = string.trim;
@@ -376,10 +377,10 @@ arrayEach(['initial', 'rest'], function(methodName, index) {
 // Add `LazyWrapper` methods for `_.pluck` and `_.where`.
 arrayEach(['pluck', 'where'], function(methodName, index) {
   var operationName = index ? 'filter' : 'map',
-      createCallback = index ? matches : property;
+      createCallback = index ? baseMatches : baseProperty;
 
   LazyWrapper.prototype[methodName] = function(value) {
-    return this[operationName](createCallback(value));
+    return this[operationName](createCallback(index ? value : (value + '')));
   };
 });
 
diff --git a/package.json b/package.json
index 92e758c51..68bb2c915 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "lodash-es",
-  "version": "3.0.1",
+  "version": "3.1.0",
   "description": "The modern build of lodash exported as ES modules.",
   "homepage": "https://lodash.com/custom-builds",
   "license": "MIT",
diff --git a/string.js b/string.js
index 0eb9d89a6..ade8e0d35 100644
--- a/string.js
+++ b/string.js
@@ -11,6 +11,7 @@ import padRight from './string/padRight';
 import parseInt from './string/parseInt';
 import repeat from './string/repeat';
 import snakeCase from './string/snakeCase';
+import startCase from './string/startCase';
 import startsWith from './string/startsWith';
 import template from './string/template';
 import templateSettings from './string/templateSettings';
@@ -35,6 +36,7 @@ export default {
   'parseInt': parseInt,
   'repeat': repeat,
   'snakeCase': snakeCase,
+  'startCase': startCase,
   'startsWith': startsWith,
   'template': template,
   'templateSettings': templateSettings,
diff --git a/string/camelCase.js b/string/camelCase.js
index 529d14a93..7d4c7dbf6 100644
--- a/string/camelCase.js
+++ b/string/camelCase.js
@@ -22,7 +22,7 @@ import createCompounder from '../internal/createCompounder';
  */
 var camelCase = createCompounder(function(result, word, index) {
   word = word.toLowerCase();
-  return index ? (result + word.charAt(0).toUpperCase() + word.slice(1)) : word;
+  return result + (index ? (word.charAt(0).toUpperCase() + word.slice(1)) : word);
 });
 
 export default camelCase;
diff --git a/string/snakeCase.js b/string/snakeCase.js
index 78c712879..1a52ee846 100644
--- a/string/snakeCase.js
+++ b/string/snakeCase.js
@@ -14,10 +14,10 @@ import createCompounder from '../internal/createCompounder';
  * _.snakeCase('Foo Bar');
  * // => 'foo_bar'
  *
- * _.snakeCase('--foo-bar');
+ * _.snakeCase('fooBar');
  * // => 'foo_bar'
  *
- * _.snakeCase('fooBar');
+ * _.snakeCase('--foo-bar');
  * // => 'foo_bar'
  */
 var snakeCase = createCompounder(function(result, word, index) {
diff --git a/string/startCase.js b/string/startCase.js
new file mode 100644
index 000000000..039606b30
--- /dev/null
+++ b/string/startCase.js
@@ -0,0 +1,28 @@
+import createCompounder from '../internal/createCompounder';
+
+/**
+ * Converts `string` to start case.
+ * See [Wikipedia](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage)
+ * for more details.
+ *
+ * @static
+ * @memberOf _
+ * @category String
+ * @param {string} [string=''] The string to convert.
+ * @returns {string} Returns the start cased string.
+ * @example
+ *
+ * _.startCase('--foo-bar');
+ * // => 'Foo Bar'
+ *
+ * _.startCase('fooBar');
+ * // => 'Foo Bar'
+ *
+ * _.startCase('__foo_bar__');
+ * // => 'Foo Bar'
+ */
+var startCase = createCompounder(function(result, word, index) {
+  return result + (index ? ' ' : '') + (word.charAt(0).toUpperCase() + word.slice(1));
+});
+
+export default startCase;
diff --git a/string/trim.js b/string/trim.js
index 0ed20991b..f8a4987bb 100644
--- a/string/trim.js
+++ b/string/trim.js
@@ -35,7 +35,7 @@ function trim(string, chars, guard) {
   if (guard ? isIterateeCall(value, chars, guard) : chars == null) {
     return string.slice(trimmedLeftIndex(string), trimmedRightIndex(string) + 1);
   }
-  chars = baseToString(chars);
+  chars = (chars + '');
   return string.slice(charsLeftIndex(string, chars), charsRightIndex(string, chars) + 1);
 }
 
diff --git a/string/trimLeft.js b/string/trimLeft.js
index 0190e2feb..134e35aa0 100644
--- a/string/trimLeft.js
+++ b/string/trimLeft.js
@@ -30,7 +30,7 @@ function trimLeft(string, chars, guard) {
   if (guard ? isIterateeCall(value, chars, guard) : chars == null) {
     return string.slice(trimmedLeftIndex(string))
   }
-  return string.slice(charsLeftIndex(string, baseToString(chars)));
+  return string.slice(charsLeftIndex(string, (chars + '')));
 }
 
 export default trimLeft;
diff --git a/string/trimRight.js b/string/trimRight.js
index 434f5b9b8..24fa43fdc 100644
--- a/string/trimRight.js
+++ b/string/trimRight.js
@@ -30,7 +30,7 @@ function trimRight(string, chars, guard) {
   if (guard ? isIterateeCall(value, chars, guard) : chars == null) {
     return string.slice(0, trimmedRightIndex(string) + 1)
   }
-  return string.slice(0, charsRightIndex(string, baseToString(chars)) + 1);
+  return string.slice(0, charsRightIndex(string, (chars + '')) + 1);
 }
 
 export default trimRight;
diff --git a/utility/callback.js b/utility/callback.js
index 58dfa58ba..8838b0d38 100644
--- a/utility/callback.js
+++ b/utility/callback.js
@@ -1,5 +1,7 @@
 import baseCallback from '../internal/baseCallback';
 import isIterateeCall from '../internal/isIterateeCall';
+import isObjectLike from '../internal/isObjectLike';
+import matches from './matches';
 
 /**
  * Creates a function bound to an optional `thisArg`. If `func` is a property
@@ -40,7 +42,9 @@ function callback(func, thisArg, guard) {
   if (guard && isIterateeCall(func, thisArg, guard)) {
     thisArg = null;
   }
-  return baseCallback(func, thisArg);
+  return isObjectLike(func)
+    ? matches(func)
+    : baseCallback(func, thisArg);
 }
 
 export default callback;
diff --git a/utility/matches.js b/utility/matches.js
index 1af6ac33e..afcefadf4 100644
--- a/utility/matches.js
+++ b/utility/matches.js
@@ -1,3 +1,4 @@
+import baseClone from '../internal/baseClone';
 import baseMatches from '../internal/baseMatches';
 
 /**
@@ -26,7 +27,7 @@ import baseMatches from '../internal/baseMatches';
  * // => { 'user': 'barney', 'age': 36 }
  */
 function matches(source) {
-  return baseMatches(source, true);
+  return baseMatches(baseClone(source, true));
 }
 
 export default matches;