"Escape" should cancel a drag operation

This is a minor issue, but nevertheless slightly annoying:
Quite often I start a drag when I haven't meant to (because either I wanted to start a lasso selection, but failed to notice that there is a component in the background or I was slightly off the intended cursor location).

Now pressing "Esc" should immediately cancel the drag. This is standard in almost any graphics software.

In Balsamic I have to commit the drag and the undo manually.