moved bug fixes to its own mod.

got reminded that game time is not necessarily real time, largely reverted to "huge" oxygen consumption (that is actually normal if you scale for the ingame time),

fixed suit atmospheres for real.

adjusted oxygen usage to human levels, (literally no organism on earth could match what it was before)
side effect: saturation now lasts minutes, may adjust later
side effect: bodge fix for suit atmospheres

initial version