NOTABLE FEATURES
- demonstrates $(vcs_dirt_status) from new vcs plugin with counts of
each dirty file type
- demonstrates $(vcs_dirt_age) from new vcs plugin
- demonstrates use of new shell plugin to make theme configuration more
readable
- demonstrates $(exit_status) from new shell plugin
- demonstrates $(shell_depth) from new shell plugin (only shown if
$SHLVL > 1, with the shell underlying a multiplexer like screen or
tmux excluded from the calculation)
