Bump to v4.7.0.

_stringToPath.js

@@ -1,4 +1,4 @@
-define(['./toString'], function(toString) {
+define(['./memoize', './toString'], function(memoize, toString) {
 
   /** Used to match property names within property paths. */
   var rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]/g;
@@ -13,13 +13,13 @@ define(['./toString'], function(toString) {
    * @param {string} string The string to convert.
    * @returns {Array} Returns the property path array.
    */
-  function stringToPath(string) {
+  var stringToPath = memoize(function(string) {
     var result = [];
     toString(string).replace(rePropName, function(match, number, quote, string) {
       result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match));
     });
     return result;
-  }
+  });
 
   return stringToPath;
 });