Collectable Cubes update

Collectable Cubes Update

New release of our game: makes you collect power cubes during gameplay and unlock new weapons

Release Notes:

• power cubes are now collectable
• power cubes can be rearranged in checkpoints (to unlock new guns)
• new weapons

See also:

• GitHub release: https://github.com/pwalig/3D-FPS-OpenGL/releases/tag/v0.3.0