- Added Bone, Flesh, Arteries, and a prototype heart.
- Made wires, bones, arteries, and pipes rotate and choose blocks automatically.
- Made beds, chairs, crash couches, and other multi-block objects place correctly.
- Updated the Components list to only show correct items.
- Made doors, airlocks, and engines switch on and off with the [E] key.
- Ensured that open doors and airlocks are the only blocks that can be passed through.