rename findTarget to boot, make it do the scope setup
use enterOver and leaveOut to send pointerenter and pointerleave events
update sample with enter and leave
fix karma testing
Firefox throws if argument given to compareDocumentPosition is not an element
test cleanup
fix pointercapture throws on IE 10
Fix dispatcher tests on IE 10
Can't use ES6 Map unless we know touches won't be stale
Expose buttons property when lacking it
Merge pull request #62 from azakus/master

Add pointerenter and pointerleave events, add buttons property to all events