in our custom themes.
With zsh starting at version 5.4, when using the `prompt_opts` array,
`nopromptsp` will be set unless the array contains a `sp`. This was
introduced in zsh at
43e55a9bcd (diff-bb10d67e7a8561b66a53a805f3c77a40R233)Fixes#209
As previous migrations of themes to git-info, this does not use its
verbose mode, so a repo with just untracked files is not considered
dirty.
It uses the newly-introduced `diverged` context and `coalesce` function
from git-info.
Closes#152
