Sync .priv/zshrc, adding uncommented auto-tmux on new shell functionality.
Sync zsh configuration, with tools to auto-start tmux.

By default, this is disabled.  Documented xmonad configuration yet to be written.
Replace tabs with 2 spaces in .zshrc.
Sync .zshrc, adding comment about control character in definition of chpwd.
Sync xmonad.hs, configuring, by a currently enabled boolean, automatically requiring a tmux session on new terminals.