Bump to v4.0.0.

internal/arrayIncludes.js

@@ -0,0 +1,16 @@
+import baseIndexOf from './baseIndexOf';
+
+/**
+ * A specialized version of `_.includes` for arrays without support for
+ * specifying an index to search from.
+ *
+ * @private
+ * @param {Array} array The array to search.
+ * @param {*} target The value to search for.
+ * @returns {boolean} Returns `true` if `target` is found, else `false`.
+ */
+function arrayIncludes(array, value) {
+  return !!array.length && baseIndexOf(array, value, 0) > -1;
+}
+
+export default arrayIncludes;