v0.1 - Prototype / preAlpha

Features:

• Working game loop
• Light enemy ship
• Bomber enemy ship
• Wave progression
• Simple score / points system
• Nonworking UI

Known Bugs: 

• Recently spawned enemies have a working BoxCollider2D, even while invisible/inactive
• [Bomber] Killing the bottom-most enemy in a column right before the attack timer goes off will force the middle enemy to start their attack from their current position.