Hans Muller 952e73583f Fix minor problems in _ScrollGestureRecognizer, Dismissable
Alternating scroll gestures would sometimes be ignored because _ScrollGestureRecognizer didn't always reset its _state when the pointer[s] went up.

A Dismissable dismiss triggered by a drag and then a fling could cause the next attempt to drag-dimiss to fail.

Fixed the definition of lerpColor().
2015-09-03 13:40:35 -07:00
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