I figured now would be a good time for new release. All the major changes are pretty much done now.

v0.99.0 2002-11-24 Timo Sirainen tss@iki.fi

+ Replaced hash file with binary tree file which makes Dovecot stay
  fast with large mailboxes after expunging multiple mails.
+ Several speed improvements with SEARCH
+ SEARCH CHARSET support using iconv(), although case-insensitive
  searching is currently supported only for ASCII characters.
+ OpenSSL support.
+ Support for regenerating Diffie Hellman and RSA parameters with
  specified intervals. NOTE: currently doesn't work with OpenSSL.
+ Support for each login connection being handled in it's own process.
  This is the default as it's more safe especially with SSL.
+ mbox locking is now safe, other processes can't modify the mbox file
  while we're reading it.
+ Notify clients with "EXISTS" almost immediately after new mail is
  received.
+ Rawlog: Support for saving user connections into files - useful for
  debugging.
+ Content-Language is finally parsed correctly
+ Lots of smaller speed optimizations
- Partial BODY[] fetches weren't working properly
- BODY[section] was buggy with message/rfc822 MIME parts
- STARTTLS wasn't working
- \* flag was missing from PERMANENTFLAGS.
- Comments inside <> mail addresses crashed.
- imap-login printed UTC timestamps to logfiles
- passwd-file wasn't reread the the file changed
- PAM authentication was implemented wrong, which caused it to break
  with some PAM plugins.
- Lots of smaller fixes, mostly to do with reliability