Bullets go the wrong way when non-vertical with Gravity API

[mrpibb4201337]

Forge 47.4.13-1.20.1
flansmod-1.20.1-0.4.316
flansbasicparts-1.20.1-0.4.316
flansvendersgame-1.20.1-0.4.316
gravityapi-1.0.0-all(link is to specific file uploaded October 28th, they do not seem to do much version control lol)

This is a little over my head to describe because of the rotation oddness going on, but at least I can confidently say being up-side-down makes you fire in the inverse direction vertically and horizontally. What's odd is that it seems Flans Mod bullet projectiles come from the correct position, unlike vanilla projectiles like arrows and ender pearls, which project from the position the head would be if the player were vertical. I guess this would be a compatibility request? Feature request?

[mrpibb4201337]

Gravity API was discontinued..? Merged into something called SolomonLib. No idea what's going to happen from here.