* Rewrite mailcap (RFC1524) support
* imap4d: SEARCH command
** Implemented SEARCH CHARSET
This requires libiconv and libunistring.
** Improved SEARCH BODY and SEARCH TEXT commands
Both commands now properly descend into multipart message parts and
decode messages, if necessary.
* Fixes in the 'mail' utility
** New mailbox notation @
@ can be used with any command requring a mailbox name to refer to the
file given with the -f option.
** Sender addresses in message sets
Arbitrary string in message set is treated as sender address. It
expands to all messages whose sender addresses as displayed in a header
summary match the string.
With the showenvelope variable set, mail incorrectly displayed
envelope on the stdout, instead of using the current output stream.
** pipe command
Last argument always specifies the command to pipe messages to.
** echo command
The echo command behaves similarly to its shell equivalent. In
particular, variable and command expansions are performed.
** fixed / and :/ searches in message sets
** Fix and improve argument completion
** Don't print original file name, use postprocessed URL representation
The original file name might contain passwords (if it refers to a
** Improve folder handling and name expansion
** Fix header display after deletions
* Fixes in IMAP client library
** Speed up opening IMAP mailboxes
Initial scan of an imap mailbox retrieves, among other data, message headers.
This considerably speeds up the operation of such tools as mail
(initial loading), frm or from.
** handle EXPUNGE response
This fixes interoperation with Dovecot imap daemon.
** fix incorporation of new messages
* Improved documentation