Fixed issue in Set.

Author: photonstorm

v3/src/structs/Set.js

@@ -8,7 +8,7 @@ var Set = function (elements)
     {
         for (var i = 0; i < elements.length; i++)
         {
-            this.add(elements[i]);
+            this.set(elements[i]);
         }
     }
 };