3D: Better touch interface.
3D: Better touch interface.

1. Make coasting actually work...

hammer.js fires three events per touch update if I'm listening for
pan, rotate, and pinch. Since all the information I need is carried
by one (it's computed before the Recognizer sees it), I'll skip
redundant events. (Failure to do so was zeroing all my velocities,
breaking coasting.

2. Press and hold to fly. It feels a bit more natural.

3. < and > keys roll but maybe I won't document this.

pteromys/quasi,pteromys/quasi,pteromys/quasi