Can we add more listener ?

[GauravCreed]

Hi @HamedTaherpour

You have done wonderful job by doing this library.

I have some question, can i add more listener in your library, i have to call listener when i drag start and stop, basically i want to develop feature like translation application, when drag image over application and get text from system application,

One more can i update icon when drag start and stop,
Thanks