s/Loader/PolymerLoader
Easier to understand tracking demo
Only enqueue pointer events for gestures if the pointer is down
Revert "Only enqueue pointer events for gestures if the pointer is down"

This reverts commit d2af0f91584d289d7ca488a655a23b74bcf1a9db.

IE 10 reports pressure: 0 and buttons: 0 on MSPointerUp, causing the recognizers to never get pointerup
Merge pull request #11 from Polymer/master

8/15 master -> stable