[ALOY-1309] Debounced and "onced" events

I've written a suggestion about having the possibility to make an event debounced or onced directly in Alloy. There is nothing more than preventing repeating the same code always... https://developer.appcelerator.com/question/180774/idea-for-new-feature-in-alloy--once-and-debounce-events Thank you for your consideration and answer