Don't pass event object if not needed.
Explicitly specify click event to get instant submenu closes.
Alter comment slightly.
Delete MSPointerUp handler and only add touchstart for non-iOS webkit.
Make MSPointerDown behave. Needs event cancelling or menus close due to mouseleave and focusout.
Remove unneeded gitignore file.
Update version, changelog and readme. IE10 touch now works like other touch browsers.