v0.1 variable jump height!! oooooh!! v0.2 plus walljump momentum v0.3 plus jump height varying by speed v0.4 plus walljumps having less power with more consecutive jumps v0.6 new momentum (wall jumps fade out to nothing over time) and new levels that have to deal with momentum v0.7 another new level or two - also ducking - hold down arrow to duck
