Visualize the quad tree in the inspector.
Fixes fps counter
Merge pull request #650 from tobeytailor/quadtree

Visualize the quad tree in the inspector.
Fixes zeroclipboard
Merge pull request #652 from yurydelendik/zeroclip-2

Fixes ZeroClipboard mouse events
Remove broken class init test
Merge pull request #653 from artcompiler/tests

Remove unstable class init reftest
Fixes BitmapData.draw when source is BitmapData
Invalidate when transform matrix is updated
Merge pull request #654 from yurydelendik/candy-hint

Fixes BitmapData.draw when source is BitmapData
Merge remote-tracking branch 'mozilla/master' into candy-3
Fixes blendMode for BitmapData.draw
Fixes mouse when canvas was scrolled
Merge pull request #655 from yurydelendik/candy-3

Misc candy fixes
Guard asserts and use constants for switch cases in the compiler.
Adds an IR generator to make it less painful to write visitors, WIP.
Simplify IR definition structure.
Display constants in IR.toString()
Check for constants in callback.
AOT compile script traits also.