Merge pull request #111 from louisptremblay/master

Use "set" instead of "splice" for child changed

Author: ebidel

firebase-collection.html

@@ -609,7 +609,7 @@ <h4>[[dinosaur.__firebaseKey__]]</h4>
 
           this._valueMap[oldValue.__firebaseKey__] = null;
           this._valueMap[value.__firebaseKey__] = value;
-          this.splice('data', this.data.indexOf(oldValue), 1, value);
+          this.set('data.' + this.data.indexOf(oldValue), value);
         });
       },