Bump to v4.11.0.

_copyObject.js

@@ -1,4 +1,4 @@
-import copyObjectWith from './_copyObjectWith';
+import assignValue from './_assignValue';
 
 /**
  * Copies properties of `source` to `object`.
@@ -7,10 +7,25 @@ import copyObjectWith from './_copyObjectWith';
  * @param {Object} source The object to copy properties from.
  * @param {Array} props The property identifiers to copy.
  * @param {Object} [object={}] The object to copy properties to.
+ * @param {Function} [customizer] The function to customize copied values.
  * @returns {Object} Returns `object`.
  */
-function copyObject(source, props, object) {
-  return copyObjectWith(source, props, object);
+function copyObject(source, props, object, customizer) {
+  object || (object = {});
+
+  var index = -1,
+      length = props.length;
+
+  while (++index < length) {
+    var key = props[index];
+
+    var newValue = customizer
+      ? customizer(object[key], source[key], key, object, source)
+      : source[key];
+
+    assignValue(object, key, newValue);
+  }
+  return object;
 }
 
 export default copyObject;