-----V1.0 SNAPSHOT----- -basic physics -switching gravity -property "can_walk_on_the_ceiling" -----V1.1 SNAPSHOT----- -added breaks (press "b" to use) -----V1.2 RELEASE----- -bug fixes -working correctly with gravity = 0 (fly mode) -----V1.3 SNAPSHOT----- -changed controls -----V1.4 SNAPSHOT----- -added air-jump
