release 0.1a

Initial game release

• Added map (limited to 128x)
• Added features with health system & context system (interaction text)
• Added Build Mode (with 4 rotations)
• Added objects like skybox, stars, clouds, trees, flowers and rocks.
• Added object variants like dead bush & dead tree.
• Added simplistic HUD with Debug Mode for extra information.
• Added several crosshair types.
• Added terrain destruction.