Bump to v4.0.0.

cloneDeep.js

@@ -0,0 +1,24 @@
+define(['./internal/baseClone'], function(baseClone) {
+
+  /**
+   * This method is like `_.clone` except that it recursively clones `value`.
+   *
+   * @static
+   * @memberOf _
+   * @category Lang
+   * @param {*} value The value to recursively clone.
+   * @returns {*} Returns the deep cloned value.
+   * @example
+   *
+   * var objects = [{ 'a': 1 }, { 'b': 2 }];
+   *
+   * var deep = _.cloneDeep(objects);
+   * console.log(deep[0] === objects[0]);
+   * // => false
+   */
+  function cloneDeep(value) {
+    return baseClone(value, true);
+  }
+
+  return cloneDeep;
+});