:( code was in a Mercurial repo at bitbucket, now the repo link gives "Repository unavailable
Bitbucket no longer supports Mercurial repositories."
It was here [0], for a while. Unfortunately...
> Go 1.9 is no longer available. Please refer to https://goo.gl/aESk5L for more information.
I think this [1] is a working Python implementation of the project.
Not sure exactly how to do it (not used mercurial in a long time), but I extracted the repository tarball to a directory then used hg clone to make the code usable/readable