This repo is 277 commits behind master

[Pomax]

Even if this is a commonmark fork with a bunch of work "on top of that", making sure that those change are still "on top of cmark" every few years feels like it should be part of the job.

It's behind by 277 commits at this point.

[UziTech]

It seems like GitHub has abandoned keeping up with the common mark spec. Because of the extensions and add-ons GitHub doesn't even follow all of the GFM spec