[Dovecot] Sieve Editheader Extension?

[Michael K Sanders]

I've done extensive searches, and there is virtually no information  
about
actual implementations of the draft Sieve Editheader Extension (which
provides 'addheader' and 'deleteheader' actions):
http://www.ietf.org/internet-drafts/draft-ietf-sieve-editheader-11.txt

Is anyone currently working on this for Dovecot Sieve?

If not, are there any plans to do so?  And before I start digging  
through
the source, is the architecture amenable to this functionality?

Thanks,

:: Mike ::