S2 was much less well maintained (in the OSS release) when Uber wrote this. Even 4-5 months ago all that was available was a mirror from when google code hostin

S2 was much less well maintained (in the OSS release) when Uber wrote this. Even 4-5 months ago all that was available was a mirror from when google code hosting shut down - undocumented stuff. This repo is new (and great to see)