Merge pull request #2476 from diversario/fix/2440-lodash-corruption

Make a copy of lodash before modifying it.

lib/utils.js

@@ -8,7 +8,7 @@ var util               = require("util")
 
 var Utils = module.exports = {
   _: (function() {
-    var _  = lodash
+    var _  = lodash.cloneDeep(lodash)
       , _s = _string
 
     _.mixin(_s.exports())