Bump to v4.1.0.

_baseSetData.js

@@ -0,0 +1,17 @@
+import identity from './identity';
+import metaMap from './_metaMap';
+
+/**
+ * The base implementation of `setData` without support for hot loop detection.
+ *
+ * @private
+ * @param {Function} func The function to associate metadata with.
+ * @param {*} data The metadata.
+ * @returns {Function} Returns `func`.
+ */
+var baseSetData = !metaMap ? identity : function(func, data) {
+  metaMap.set(func, data);
+  return func;
+};
+
+export default baseSetData;