I have now marked the PR ready for review.

Terry:

Could you please take a quick look to double-check that the changes proposed are fully backwards-compatible? I have run the IDLE tests and have tried to pay particular attention to this problem when developing, but would appreciate a second opinion (to ensure we won't break existing tkinter scripts - such as IDLE).

Serhiy:

I would really appreciate your opinion on the patch, particularly the change to the _bind method. I am also concerned about the getlist_event method as it can split dropped text data (for example) but I don't know how to fix it (unless we give the user the raw data for them to fix it?).