Final Optimizations before the release

I got some FPS drops on my android, so I wanted to optimize the game bit today. It ended up, that I limited the game to 30 FPS and it still plays fine I think. There are many android-specific tasks ahead that I can't really do today, such as a leaderboard for the scores, but that's a topic for later.

This will probably be the last export for the game for every system, since I'm focussing on android - so download that immediately!!