http://i3xi5qxvbrngh3g6o7czwjfxwjzigook7zxzjmgwg5b7xnjcn5hzciad.onion/version-spec.html
Between these releases, CVS is versioned with a -cvs tag: after
0.1.1.1-alpha comes 0.1.1.1-alpha-cvs, and so on. But starting with
0.1.2.1-alpha-dev, we switched to SVN and started using the “-dev”
suffix instead of the “-cvs” suffix. Version status Sometimes we need to determine whether a Tor version is obsolete,
experimental, or neither, based on a list of recommended versions.