Removed extra math

The elapsed's get cancelled in the numerator and denominator anyway. Probably doesn't jitter when followLerp = 0, but I didn't check for it.
Add limit on touch movement for triggering button events
Update camera flash sprite position when camera position is set
Make FlxMath.bound have optional params instead of requiring nulls.
FlxColor fix to make a 0 FlxColor not equal null
Better fix for FlxColor equality ensuring (null:Null<FlxColor>) == null on all platforms (Thanks @mrcdk!)
FlxColor unit test
Expand FlxColor assignment operators as a temporary fix for a haxe bug
Changed lerp to 0-1 value

Unsure about jittering right now
Undid flxrandom change

I'll get this right one day
Merge pull request #1 from HaxeFlixel/dev

Updating to recent dev
Cleanup, comments
Consistent across framerates

That's the plan, anyway.
Added a global CachedGraphics persistence variable.

If specified, CachedGraphics will use the persist value supplied by the
constructor. Otherwise, it defaults to the value of
persistentCachedGraphics in FlxG.bitmap (BitmapFrontEnd).

This allows globally setting what the persist value of CachedGraphics
should default to,
making it easier to keep desired graphics persistent between state
changes.
Fix potential null error in FlxBitmapTextField#destroy(), closes #1240
Better placement/wording for the HaxeFlixel style.
Fix FlxCamera#flash(), closes #1239
Fixed some point / rect pooling issues
FlxBitmapTextField#backgroundColor should be transparent by default, closes #1242
Merge pull request #1241 from LaughingLeader/merging

Added a global CachedGraphics persistence variable.