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Merge branch 'master' of https://github.com/jczarnowski/SpaceShooter
World model code transscribed from sandbox. Some pictures added.
DeltaTime from float[s] to int[ms] changed.
Merge branch 'master' of https://github.com/jczarnowski/SpaceShooter

Conflicts:
	src/com/jcf/spaceshooter/screen/GameScreen.java