Afdarts RTS: version 1.1.5 alpha released

Afdarts 1.1.5 alpha has been released. It fixes a few annoying bugs in previous versions and fixes the broken projectile implementation, though the new faction AI algorithm does not take advantage of projectiles yet.

Changelog:
- individuals continue cooling down when given a new command
- improved faction AI balance between approaching and retreating
- improved rock texture
- fixed/completed projectile implementation
- removed splash screen