Engine Overdrive!

v0.1.5-Alpha build.9;
- Changed shooting to autofire now.
- Changed the way the miniBoss works, and added the blue version.
- Increased the shield strengh of the red miniBoss.
- Slowed down the weapon fire rate buff, and increased the amount of
powerups required to level up cannon.
- Added a Speed Burst ability, activated via the [SPACE] key, has
cooldown (Short currently).
- Updates to the Instructions Loop.