pwcli: list: show cover letter
pwcli: list: show cover letter

If a patch has a cover letter show it before the patch in patch listings. Only
the name is shown, nothing else. Also there's no index so it's not possible to
reply to the cover letter, yet.

Signed-off-by: Kalle Valo <7081a7d99b8c74c0698a728df19e3915a995d7e1@codeaurora.org>

kvalo/pwcli,kvalo/pwcli