Hey Naselus,
I noticed the Defines for the mod are set up using the 00_defines.lua file, overwriting it, instead of using a new lua file to overwrite specific defines. Because I'm a bit obsessive about stuff like that I went ahead and manually created a custom relativity_defines.lua file instead. Mainly intend to use it for myself, but if you'd like a copy let me know.
I do keep meaning to rewrite it Your version is now going to be quite badly out of date compared to what we're working with in the test build, though, so it won't be a lot of use I'm afraid.