[Powerups] Moved Powerups to a separate file
[Levels] [Bonus 1] Bonus level only includes rapid fire; levelConfig is now part of game object; dying levels up
[Levels] [Bonus 1] Bonus level only includes rapid fire; levelConfig is now part of game object; dying levels up
[Levels] [Bonus 2] Added bonus level 2
[Bombs] Bombs are lost on new level