Changed LevelUp screen method
Merge branch 'master' of https://github.com/CMSC331-Project2/Angry_Germs
Added humanphase animation between levels, changed the levels to where toy have to stay alive instead of kill an amount of enemies, added music, added sound, added new animations, score kept for each level and cumulatively, TODO: potential upgrade button added
Cleaned up, fixed bugs, etc.
Merge branch 'master' of https://github.com/CMSC331-Project2/Angry_Germs

Conflicts:
	src/com/jeremyP/diseasedefense/GameScreen.java
Fixed some bugs
Merge branch 'master' of https://github.com/CMSC331-Project2/Angry_Germs

Conflicts:
	assets/gameover.png
	src/com/jeremyP/diseasedefense/GameScreen.java
	src/com/jeremyP/diseasedefense/MainMenuScreen.java
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