passive regen for oxygen tanks

[babayetu83]

i think small and large oxygen tanks should be able to regenerate air while standing in an area with air. this would allow them to regenerate air quickly and it should cap off at 2x the minimum needed before you start suffocating so you dont have people just standing around to fill up their oxygen tanks to max. in my opinion this is a much better solution to monkeying around with air canisters