Maybe a stupid question, but I'm quite new to this.
What does it need to compile it for minecraft 1.11.2?

Several years later, I am skipping 1.11. In fact I'm skipping all the way to 1.20. There were forks for 1.11 and 1.12 in that time, though I'm not aware of any 1.13-1.19 forks. They are linked on the CurseForge page.

It would need some amount of work--the changes to ItemStacks in 1.11.2 are non-trivial.

I'm new to the modding minecraft thingie, can you give an example? Maybe I'm able to do the work....? (i know some Java)

@squeek502 I am willing to work on this with my relatively minimal free time. Should #77 get resolved first though? And should each version (1.7, 1.10, 1.11, possibly 1.12) get indefinite support?

@5t0rmr1d3r There are a few changes. Firstly ItemStacks are pretty much never null anymore. Lots of the fields have been properly encapsulated too.

@elifoster When/if #77 is resolved, it would be easy to port/backport, so it doesn't need to be solved before a 1.11.2 version.

About support: it doesn't really matter to me--it might be nice to support any 1.10.2+ versions simultaneously (since the differences aren't too huge and 1.10.2 still has a playerbase afaik), but not worry about backporting stuff to 1.7.10 (mostly because the differences between 1.7.10 and 1.10.2+ would likely make it not worth the effort). But, really, I'm cool with whatever you want to do.

I've begun the port at branch 1.11.2.

the port is on work isn't it?
because the build fails...
veganoption_1.11.2_stacktrace.txt

Yeah, still a work-in-progress.