Implements basic oil processing related revisions based around the re-introduction of light oil. Qualitatively, this mod causes basic oil processing to output light oil, sulfur to be made from solid fuel, and rocket fuel to use heavy oil rather than light, alongside some numerical tweaks to accommodate the same.
This mod is designed to be a middle-ground that incorporates as much of the intent of the devs (as far as they have elaborated in the FFF-304, FFF-305, and 0.17.60 posts) as possible while also maximizing the benefits of the old oil balance.
See the home forum thread for the balance theory, and changelog for specifics.