- New `player inputs` event, helps detect what inputs players are pressing.
- New `MegActiveModel.dismount_passenger` mechanism, which dismounts any given passenger mounted on an active model.
- New `MegActiveModel.dismount_rider` mechanism, which dismounts any given mounted individual on an active model.
- New `MegModeledEntity.velocity` tag, which returns the velocity of the modeled entity.
- New `MegModeledEntity.add_velocity` mechanism, which adds velocity to the modeled entity.
- New `MegModeledEntity.global_move` mechanism, which moves the modeled entity using the world axis, not respecting yaw/pitch.
- New `MegModeledEntity.move` mechanism, which moves the modeled entity to the input vector, respecting yaw/pitch.
- New `MegModeledEntity.velocity` mechanism, which sets the velocity of the modeled entity.
- Minor cleanup