Rename isWhitespace to isSpace.

lodash.js

@@ -744,7 +744,7 @@
    * @param {number} charCode The character code to inspect.
    * @returns {boolean} Returns `true` if `charCode` is whitespace, else `false`.
    */
-  function isWhitespace(charCode) {
+  function isSpace(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)));
   }
@@ -813,7 +813,7 @@
     var index = -1,
         length = string.length;
 
-    while (++index < length && isWhitespace(string.charCodeAt(index))) {}
+    while (++index < length && isSpace(string.charCodeAt(index))) {}
     return index;
   }
 
@@ -828,7 +828,7 @@
   function trimmedRightIndex(string) {
     var index = string.length;
 
-    while (index-- && isWhitespace(string.charCodeAt(index))) {}
+    while (index-- && isSpace(string.charCodeAt(index))) {}
     return index;
   }