- pigeonhole updated to 0.4.20
- Made the retention period for redirect duplicate identifiers
  configurable. Changed the default retention period from 24 to 12 hours.
- sieve-filter: Fixed memory leak: forgot to clean up script binary at
  end of execution
- managesieve-login: Fixed handling of AUTHENTICATE command. A second
  authenticate command would be parsed wrong.

- dovecot updated to 2.2.29.1
- dict-sql: Merging multiple UPDATEs to a single statement wasn't
  actually working.
- pigeonhole updated to 0.4.18
- imapsieve plugin: Implemented the copy_source_after rule action. When this
  is enabled for a mailbox rule, the specified Sieve script is executed for
  the message in the source mailbox during a "COPY" event. This happens only
  after the Sieve script that is executed for the corresponding message in the
  destination mailbox finishes running successfully.
- imapsieve plugin: Added non-standard Sieve environment items for the source
  and destination mailbox.
- multiscript: The execution of the discard script had an implicit "keep",
  rather than an implicit "discard".

- fix crash:
  https://github.com/dovecot/core/commit/64e75f0c95e491debf4b3bc7091d0335d0f63646.patch
  https://github.com/dovecot/core/commit/4439a1780afc06fe644ead3df6f0b3f77f9cb867

- add patch http://hg.dovecot.org/dovecot-2.2/raw-rev/b9d91c59bc5b
- add patch http://hg.dovecot.org/dovecot-2.2/raw-rev/865405fce42e

- do not crash during mail search (CVE-2012-5620)

- add limit-patch http://hg.dovecot.org/dovecot-2.1/raw-rev/a4e61c99c7eb

- fix dvt-segfault

- bump version