[jrochkind1]

Yep, came here to say the same thing.

There's already a lot of open source work going on around CSL, which I think originally comes out of Zotero.

While CSL comes from Javascript world, there already is a complete ruby implementation, providing ability to format a cituation into any citation style in the CSL style repository. https://github.com/inukshuk/csl-ruby https://github.com/inukshuk/citeproc

Even if github or other open source authors weren't happy with that implementation (whether for legitimate reasons or "not invented here"), it would still have been nice to do something around the basic CSL standards in some way, instead of inventing a new similar standard in ".cff".