[Dovecot] Sieve extension registration

[Julian Cowley]

Cool, I just happened to notice this while browsing...

>From <http://www.iana.org/assignments/sieve-extensions>:

     Capability name: vnd.dovecot.* (anything starting with "vnd.dovecot.")
     Description:     Extends the Sieve language with vendor-defined
                      functionality specific to the Dovecot Secure IMAP
                      server (http://www.dovecot.org).
     RFC number:      Not applicable
     Contact address: Stephan Bosch <stephan&rename-it.nl>
                      Timo Sirainen <tss&iki.fi>
     Registration Date: 2008-07-28

Any current plans for it or is it just a placeholder?