changed some of the GUI to show number of enemies
Rocket only produces one explosion
Merge Kasey rocket fix
Merge https://github.com/kevcoxe/Four-to-the-Fifth into kevin
Merge kevin's gui updates; fix small music toggle bug.
Merge https://github.com/JishanF/Four-to-the-Fifth into rhea
trim mg image.
Add robot enemies.
Reduce fire delay so game is harder.
Fix shotgun negative ammo count bug.
Fix negative ammo count in general bug.
Update tmx resources.
Update loading screen.
Add about label to game loading screen.
Add homing rocket ability.
Enemies sight range again and can traverse corners :O
Readme tweak.
Merge Rhea's AR
Refactor to use a for loop.

Really though? Why?
Merge https://github.com/KWhite10/Four-to-the-Fifth into kasey