Fixed spacing issue for the JSON level file.
Added stage 5.
Level 5 was tweaked, and Level 6 was created.
Audio was lowered for the intro song.
Fixed a bug whereby the LevelSelectState tried to stop music with a reference that changed by the time the State changed.
Added a bigger penalty for colliding.
Level 7 now implemented.
Fixed a bug that displayed the batteries on top of the enemy robots.
Level 8 is now added.