Shandyan

Related to #2251

If it's easier to track things in specific issues, this old one can be shut down. I'll try and split this one up later today.

This is because the boots give a bonus to `speed` while the class feature gives a boost to `land-speed`. I'm not sure which of these is correct, and what should...

Could this work for the fighter class features that let you change feats daily? (Combat Flexibility and Improved Flexibility)

I've looked at the choiceset, and the issue is that the Universalist choiceset will only return wizard feats without a pre-requisite, rather than feats without a pre-req OR with a...