* Add CVars for swimming, apply to swim speed calc
* Prevent modifer from working underwater
* Re-enable swim speed mod when underwater, use new (orig) function for y-velocity while diving
* Add to presets list
* Fix spacing
* block out vanilla + comments
* re-org vanilla code block in a sane way
* new documentation format
* rename Surface function + comment for usage
* handle merge conflicts, but like an adult this time
d9310e4543
