[Dovecot] Two important new Pigeonhole v0.3 features

[Stephan Bosch]

Hello Dovecot users,

Pigeonhole v0.3 for Dovecot v2.1 has two new features I would like you 
to play with before I make a first release:

1) The new Sieve editheader extension 
(http://tools.ietf.org/html/rfc5293). This allows modifying the headers 
of the message before delivery. This is actually the first implemented 
extension that can modify the message itself in any way. This feature 
adds quite a bit of new code that I'd like to see tested more thoroughly.

2) The new sieve-filter tool (documented in the sieve-filter(1) man page 
upon installation). This allows (re-)filtering messages that are already 
stored in a particular mailbox. It preserves the assigned IMAP flags and 
keywords and using the imap4flags extension these can also be modified. 
It also plays nice with the editheader extension. Judging by postings in 
this mailing list from the last few years, this is a highly-demanded 
feature and I'm glad that I finally got around to finish this thing. If 
the new sieve-filter tool is lacking certain features in your opinion, 
just let me know. Needless to say: read the man page carefully and watch 
out with important mail.

This is currently only available from the mercurial repository, but if 
you prefer to have an .rc1 release first, just tell me and I'll make 
one. The automatic Debian repository already includes these features.

Regards,

Stephan.