Log Message:
Changes 2.0.11:
* dotlock_use_excl setting's default was accidentally "no" in all
  v2.0.x releases, instead of "yes" as in v1.1 and v1.2. Changed it
  back to "yes".
- v2.0.10: LDAP support was broken
- v2.0.10: dsyncing to remote often hanged (timed out in 15 mins)

Chamges 2.0.10:
* LMTP: For user+detail at domain deliveries, the +detail is again written
  to Delivered-To: header.
* Skip auth penalty checks from IPs in login_trusted_networks.
+ Added import_environment setting.
+ Added submission_host setting to send mails via SMTP instead of
  via sendmail binary.
+ Added doveadm acl get/set/delete commands for ACL manipulation,
  similar to how IMAP ACL extension works.
+ Added doveadm acl debug command to help debug and fix problems
  with why shared mailboxes aren't working as expected.
- IMAP: Fixed hangs with COMPRESS extension
- IMAP: Fixed a hang when trying to COPY to a nonexistent mailbox.
- IMAP: Fixed hang/crash with SEARCHRES + pipelining $.
- IMAP: Fixed assert-crash if IDLE+DONE is sent in same TCP packet.
- LMTP: Fixed sending multiple messages in a session.
- doveadm: Fixed giving parameters to mail commands.
- doveadm import: Settings weren't correctly used for the
  import storage.
- dsync: Fixed somewhat random failures with saving messages to
  remote dsync.
- v2.0.9: Config reload didn't notify running processes with
  shutdown_clients=no, so they could have kept serving new clients
  with old settings.