Bump to v4.7.0.

isString.js

@@ -17,10 +17,12 @@ var objectToString = objectProto.toString;
  * Checks if `value` is classified as a `String` primitive or object.
  *
  * @static
+ * @since 0.1.0
  * @memberOf _
  * @category Lang
  * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
+ * @returns {boolean} Returns `true` if `value` is correctly classified,
+ *  else `false`.
  * @example
  *
  * _.isString('abc');