http://tehbemfqolualhxwkyimu3bdob5s4hkrfuwbwxzbblncjy2j2owgolqd.onion/xonsh.html
Branch information for version control systems (Mercurial/Git) was removed by default because of performance issues. The "amalgamation" optimization was removed because it complicated the codebase and error reporting. All reliance on foreign shells was removed (except for, optionally, tab completion via Bash).