Bump to v4.13.0.

constant.js

@@ -11,10 +11,12 @@ define([], function() {
    * @returns {Function} Returns the new constant function.
    * @example
    *
-   * var object = { 'user': 'fred' };
-   * var getter = _.constant(object);
+   * var objects = _.times(2, _.constant({ 'a': 1 }));
    *
-   * getter() === object;
+   * console.log(objects);
+   * // => [{ 'a': 1 }, { 'a': 1 }]
+   *
+   * console.log(objects[0] === objects[1]);
    * // => true
    */
   function constant(value) {