The following things were changed
* The list of events it listens to by default was expanded
* It now supports canceling timers
* Calling .idle() on an element now returns a control object that can be used
to manipulate the timer
* Small tweaks to variable names, arguments, jQuery usage, etc.
The code probably still needs some cleanup, but I'm sick of looking at it
right now.
(imported from commit 6868cb6fd97ab994a871f5ed6951995b254e340e)