Merge pull request #1 from HaxeFlixel/dev

update
CurveTo, fixes, etc

beginFill only if a fillStyle is specified or assumed
Removed FillStyle

The Color param makes fillStyles moot.  Added a default line thickness to setLineStyle.
Few updates

FillColor instead of Color
Merge pull request #1263 from MSGhero/dev

FlxSpriteUtil curveTo + fixes, etc