Bump to v4.0.1.

lodash.now/index.js

@@ -1,10 +1,10 @@
 /**
- * lodash 4.0.0 (Custom Build) <https://lodash.com/>
+ * lodash (Custom Build) <https://lodash.com/>
  * Build: `lodash modularize exports="npm" -o ./`
- * Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
+ * Copyright jQuery Foundation and other contributors <https://jquery.org/>
+ * Released under MIT license <https://lodash.com/license>
  * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
- * Copyright 2009-2016 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
- * Available under MIT license <https://lodash.com/license>
+ * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
  */
 
 /**
@@ -14,7 +14,6 @@
  * @static
  * @memberOf _
  * @since 2.4.0
- * @type {Function}
  * @category Date
  * @returns {number} Returns the timestamp.
  * @example
@@ -22,8 +21,10 @@
  * _.defer(function(stamp) {
  *   console.log(_.now() - stamp);
  * }, _.now());
- * // => Logs the number of milliseconds it took for the deferred function to be invoked.
+ * // => Logs the number of milliseconds it took for the deferred invocation.
  */
-var now = Date.now;
+function now() {
+  return Date.now();
+}
 
 module.exports = now;