Vanilla Version Phase

With the version 0.991TS Carsteroids officially enters the Vanilla Version Phase. The "vanilla" refers to a stable complete basic version (aka pre-beta) for testing while adding more content.

Here the news:

- Tutorial ready to play.
- New area backgrounds.
- New mine-deployer skin.
- New beam/shield collision effect.
- Gameplay tuning.
- New debris visual effects.