mutt 1.9.3 released

[Kevin J. McCarthy]

Hi Mutt Users,

I've just released version 1.9.3. Instructions for downloading can be
found at http://www.mutt.org/download.html.

This is a bug fix release, fixing a problem with large IMAP UIDs and
with resuming S/MIME encrypted drafts.

Additionally, the flea (muttbug) program has been removed from this
release. We have migrated over to gitlab for code hosting and issues,
and encourage everyone to report issues at
https://gitlab.com/muttmua/mutt/issues instead.

Thanks to everyone who reported issues, sent patches, and helped test!

-Kevin