- More cleaning up and major refactoring in Contraption entity implementation (needs testing)
- Minecarts can no longer be mounted on seats
- Mechanical bearings now "stabilize" rotation of a contraption with an attached sub-contraption
- buffering SeatMovementBehaviour
- changed visibility of AllMovementBehaviours.addMovementBehaviour(ResourceLocation, MovementBehaviour) to public for easier mod compat
- added console warn message when something tries to register more than one movement behaviour per block