Sieve filtering for Roundcube

I wanted to see if there has been any progress towards server-side
filtering support (read: Sieve/timsieved) within Roundcube. If
nobody else has taken on this project, I wouldn't mind working on
"porting" the functionality in Horde's Ingo over to Roundcube. I
have not done much with PHP, but I'm a highly skilled Perl
programmer. I have been known to submit PHP patches to various
projects (PostfixAdmin, BASE) in the past, so I feel I'd be up to
it. Of course, the proof is in the pudding. :)

Thanks,

-- Jason Dixon DixonGroup Consulting http://www.dixongroup.net