Bump to v3.4.1.

lodash.add/README.md

@@ -1,4 +1,4 @@
-# lodash.add v3.4.0
+# lodash.add v3.4.1
 
 The [modern build](https://github.com/lodash/lodash/wiki/Build-Differences) of [lodash’s](https://lodash.com/) `_.add` exported as a [Node.js](http://nodejs.org/)/[io.js](https://iojs.org/) module.
 
@@ -17,4 +17,4 @@ In Node.js/io.js:
 var add = require('lodash.add');
 ```
 
-See the [documentation](https://lodash.com/docs#add) or [package source](https://github.com/lodash/lodash/blob/3.4.0-npm-packages/lodash.add) for more details.
+See the [documentation](https://lodash.com/docs#add) or [package source](https://github.com/lodash/lodash/blob/3.4.1-npm-packages/lodash.add) for more details.

lodash.add/index.js

@@ -1,8 +1,8 @@
 /**
- * lodash 3.4.0 (Custom Build) <https://lodash.com/>
+ * lodash 3.4.1 (Custom Build) <https://lodash.com/>
  * Build: `lodash modern modularize exports="npm" -o ./`
  * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
- * Based on Underscore.js 1.8.2 <http://underscorejs.org/LICENSE>
+ * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
  * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
  * Available under MIT license <https://lodash.com/license>
  */
@@ -22,7 +22,7 @@
  * // => 10
  */
 function add(augend, addend) {
-  return augend + addend;
+  return (+augend || 0) + (+addend || 0);
 }
 
 module.exports = add;

lodash.add/package.json

@@ -1,6 +1,6 @@
 {
   "name": "lodash.add",
-  "version": "3.4.0",
+  "version": "3.4.1",
   "description": "The modern build of lodash’s `_.add` as a module.",
   "homepage": "https://lodash.com/",
   "icon": "https://lodash.com/icon.svg",