Removed files of Racetrack Extension which should not be part of the
base engine.
Fixed time delay bug in new ScreenManager.
Made opening screen in Screen Manager to be initially invisible, not
just alpha = 0.
Updated the new screen manager to correctly fade in/out between screens.
Since we're now taking the Stage3D into account, which is not on the
display list we can't just fade/in out by fading the screen container.
Instead a cover rect is used.
Updated test screen and view to use render2D example.
Updated Render2D to not use it's own gameloop hook. Instead it should be
able to tick it's rendering externally.
Improved text view.
Compiled new Tetragon SWC.
Packed Distribution file.