Scope debouncing to the event target

[x4d3]

If 2 elements of the same type occurs on the same time, one may be ignored as both the event will be dispatch through the same channel. This makes sure that they can't share the same timeoutId if they are pointing to different targets.

Fix #15

I decided to duplicate debounce to debounceEvent to keep the backward compatibility.

[x4d3]

I would argue that the errors reported by "Codacy Static Code Analysis" are not applicable for this codebase.
Also they are other examples of direct assigntion to object in the code.(for example initializedEvents)

[hopsoft]

Looks like we have some conflicts. Happy to dive into this if you can resolve those.

[x4d3]

Dear @hopsoft
Sorry for taking so long to reply, I didn't see your message.
I've fixed the merge conflicts.