trait replacer/helper

[20 jul 2021 - this mod will no longer be tested on patches, but I will provide support for anyone who's still using it until it breaks](Scroll down a bit for a step-by-step guide - I can also answer questions in the comments here if you're having trouble, since this is more of a tool than a mod.) I'm back again and running on (two? three?) a few straight days of coding to get this mod working! It…