Bump to v4.1.0.

_baseForIn.js

@@ -0,0 +1,16 @@
+define(['./_baseFor', './keysIn'], function(baseFor, keysIn) {
+
+  /**
+   * The base implementation of `_.forIn` without support for iteratee shorthands.
+   *
+   * @private
+   * @param {Object} object The object to iterate over.
+   * @param {Function} iteratee The function invoked per iteration.
+   * @returns {Object} Returns `object`.
+   */
+  function baseForIn(object, iteratee) {
+    return object == null ? object : baseFor(object, iteratee, keysIn);
+  }
+
+  return baseForIn;
+});