tl;dr Developing in a tmux session has sped up my TDD cycle considerably, especially with the help of tslime.vim and turbux.vim. I get immediate feedback in one pane, but never have to leave vim or lose context of what I’m working on to see the test result. Taking a cue from Xavier Shay’s excellent intro to tmux, I’ve been using tmux lately as my primary workspace. There are excellent introduction