Replace all occurances of BT_USE with BT_SPIN (2.2!)
Hopefully this sparks discussion about how we should treat community changes for the next major version;
right now the best we can do is rush out our merge requests near their release. Maybe a next-major branch?
EDIT: lol irrelevant, now targetting 2.2
(P.S. Inazuma challenged me to do it now)
Edited by Golden