0.2.1 Released

0.2.1 brings in a few features and changes that I wanted to get out quickly, to improve the game experience a lot.

- Added the "Target Practice" map

- Implemented "Slope Detection", which makes moving up and down slopes much more pleasant

- Made a model and sprite for the Grenade Launcher

- Made animations for melee weapons

- Implemented "Projectile Slowdown Fields", areas that reduces projectile speeds while they are within it. One can be found on "Density".

- Implemented version-locking, so you now cannot join rooms that are running an older or newer version.