- Update to new upstream release 2.20
* Upgrade UW-IMAP to Panda IMAP from github.com/jonabbey/panda-imap
* S/MIME: Add screen to manage certificates.
* S/MIME: Signatures are validated using the user's certificates
instead of the ones included in the message. Behavior can be
disabled by disabling the option "Validate Using Certificate
Store Only" which is enabled by default.
* S/MIME: add the sender certificate to the list of certificates
in encrypted messages to make it possible for the sender to
decrypt the message they sent.
* S/MIME: Forwarding a message will include the signed part as part
of the text and not as a multipart message, just as the reply
command does.
* Add support to selective expunge through a subcommand of the
select-apply commands.
* Pico: New subcommand of the search command, allows to reverse the
direction of search.
* Add /tls1, /tls1_1, /tls1_2 and /dtls1 to the definition of a
server to use different ways to connect using ssl, for example
{server.com/tls1} will attempt to connect to server.com at the
ssl imap port (port 993) and establish a connection using TLSv1.
These flags can be used in conjunction with the /ssl flag, the
ssl flag is redundant. Conversely, however, the /ssl flag does
not imply any of these flags; the /ssl flag means SSLv3 or, if
not available, SSLv2 in the SSL port.
* Alpine does not attempt to automatically reopen a collection that
was not opened due to cancellation by the user. Instead, the user
must try to open it explicitly.
* Experimental: Write the content-type of a message in lowercase,
as some non-compliant servers do not understand uppercase