Add postprocess to FlxCamera for non flash targets Part I
Some improvements to PostProcess shader. Unfortunately the area that falls outside a camera (with a shader applied) shows up black. Need helps.
Merge branch 'dev' into post-process
Added ability to take in classes as Font param in FlxText.setFormat()
Merge branch 'dev' into post-process
Making post process work on FlxGame. Still broken though...
Merge remote-tracking branch 'origin/dev' into post-process-game
Flash compile time fixes for post processing branches.
Added basic recycling to FlxPoint object. Usage: var point = FlxPoint.get(); /* do stuff with point */ point.put(); // recycle point.
Merge branch 'dev' into post-process-game
Merge branch 'dev' into post-process-game
Fixing issue 897 where post process sprite was getting squished.
Merge branch 'dev' into post-process-game

Conflicts:
	flixel/FlxCamera.hx
	flixel/FlxGame.hx
	flixel/system/frontEnds/CameraFrontEnd.hx
Move FlxSignal macro into separate class for cleaner importing
Make FlxDestroyUtil array functions not terriblemore efficient and less redundant
Merge branch 'dev' of https://github.com/HaxeFlixel/flixel into dev

Conflicts:
	flixel/util/FlxDestroyUtil.hx
Empty the arrays a more efficient way, plus some formatting
FlxAngle: Added angleFromFacing. FlxVelocity: DRY
Added a speed property to FlxEmitter
It will be used when the emitter mode is set to CIRCLE
Removed velocity by mistake, bring it back