[PR] Gravity and Gravity Tethers

[GARGATHUGANOKSREVENG]

currently moving in 0g deals pretty hefty stamina damage occasionally with messages like "You take effort to keep yourself angled properly in low-gravity."

this would be cool if it made jetpacks more strategic to use, as in they totally negated that stamina penalty because of jet propulsion, but they don't

I'd use jetpacks way more if they did that