#25 drag and drop -> x,y coordinates

[Rodrigo Frenk]

it'd be really nice to be able to get the x,y coordinates of the point in an (user)view where an object gets dropped. this could come in very handy for sequencers, for instance.
something like
v=UserView(w,Rect(x,y,w,h));
v=receiveDragHandler{|view,x,y| [view,x,y].postln };