WIP touch events
Working drag'n drop for touch devices
Working drag'n drop for touch events
Merge remote-tracking branch 'origin/master' into touchevents

Conflicts:
	src/chessground/drag.cljs
Fix touch detection
Move get-target on top
Merge branch 'master' into touchevents
Prevent default ontouchstart
Deactivate dragStart for now
Merge remote-tracking branch 'origin/master' into touchevents

Conflicts:
	src/chessground/drag.cljs
	src/chessground/render.cljs
Disable on-start for touch devices for now