[tmux] Fallback to $(hostname) when HOSTNAME is unset
[tmux] Fix regression (hard coding of tmux.conf)
[tmux][tmuxlaunch] Set default-terminal in tmuxlaunch only

Tmux could really use some synchronous scripting support. We use bash
<(proc) fds to pass conf literals to tmux without a temp file.
[haus] Remove top-level setup.sh
[tmux] monitor-activity bindings