It would be useful to have a link in the README.md for folks to know where to file issues for the GFM spec (https://github.github.com/gfm) page (and ideally, have that page tell people where it lives so they can file issues about spec incompletion or errors).

I was hoping to find that here because I want to raise the issue that the current spec has too many HTML "start conditions", with several conditions simply being the same thing (condition 7 wholly entails condition 6, warranting a text update.