The check that determines the percentage of an item thats flammable is amazing; the code is actually really well done. However I'm using this with py's mods which adds 1 billion items making the check take quite a while when first loading in, as well as uncountable items that shouldn't be flammable. I know you said you were adding a GUI for all this stuff at some point which will be great, but until then is it possible to add a setting that only makes fluids and items flammable if they have a fuel value? I would submit on github but idk how to use git :/ Thanks for the great mod though

also a small suggestion to add a text tag under fluid and item descriptions if the item is flammable or not. I have no idea how this works at runtime so not sure if its even possible

Yeah so I had no time the last few month to work on this and still got a few things aside from this mod on my todo list
GUI is half done and also the flammability calculations are getting a rewrite to allow for faster cascading changes so if you were to change one item only the items that follow it in the graph/tree will be affected without recalculating the entire item graph.
I had the same idea to add a tag for flammability but don't think that's possible.
Will add that fuel value only option once I'm done with the other changes :P