Micro-Gravity (Devlog#2): Better Gameplay

This version is big, it includes significant gameplay changes such as:

-New enemy ship with completely different behavior, sounds and special effects

-Change in game resolution, now there is more game space to more easily dodge enemies

-Shooting enemies smashes them into small pieces that drift through space and cause a chain of destruction effect, just like in real life!

It also includes some minor changes such as a new sound options menu, although there is no music yet, and some bug fixes.