fix cases where touchend does not fire and breaks pointermap state
button pressure reversed
Merge branch 'master' of https://github.com/toolkitchen/PointerEvents
properly represent pan-x pan-y in -ms-touch-action property
scope PointerMap and SideTable to not leak them into global scope
remove the ! in the license comment
Merge pull request #31 from azakus/master

FIx missing touchend, code cleanup