Merge pull request #6 from HaxeFlixel/dev

Dev
FlxAnimationController.copyFrom(): Additional null check, fixes #741
Merge branch 'dev' of https://github.com/HaxeFlixel/flixel into dev
FlxG: addChildBelowMouse() and removeChild() added
Added toString() methods for FlxPoint and FlxRect
removing some destroyAnimations(); calls from FlxSprite
Console cleanup
- removed some rather unnecessary commands
- improve docs
- addCommand() is more flexible now due to less hardcoding
- moved filterDigits() into FlxStringUtil
- FlxSystemButtons are no longer tabEnabled on flash
Merge pull request #743 from UncleDec/dev

Added toString() methods for FlxPoint and FlxRect
FlxDebugger: Remove console for mobile targets, #433
FlxDebugger: Use Std.string() to format Data for log / watch, improve FlxPoint.toString() and FlxRect.toString()
FlxColorUtil: Replace RGBA references by ARGB
added resetFrameBitmapDatas() call in sprite's set_pixels
Console: Prevent null error on invalid commands
FlxSprite: Add setGraphicDimensions()
FlxSprite: Seperate some logic of setGraphicDimensions() into updateHitbox(), improve docs of scale
Log: Seperate html formatting logic into FlxStringUtil.htmlFormat(), other small debugger tweaks
Console: Seperated some helper functions into new ConsoleUtil class, better docs
Console: Register "state" by default, make callFunction() work with Bools
Move FlxClickArea to flixel-addons
FlxMath.chanceRoll() improvement (can now take Floats)