[w3c/uievents] Dispatch mouseenter/leave/out/over when the layout (or scroll) changes (#154)

Add text to ensure that when a layout or scroll changes mousenter/leave/out/over MUST be dispatched.

A user agent may select to dispatch them shortly after the action is completed for say a scroll action it does not make sense to dispatch them until the user agent has determined the scroll to end.

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/w3c/uievents/issues/154