reimplemented dmarc module to use Mail::DMARC
updated SPF plugin to save SPF results in dmarc_spf note
update dkim to store DKIM results in dkim_result & dkim_verifier notes
changed the method of saving results. Instead of appending to/from a header, plugins save results to a connection note.
Qpsmtpd::SMTP.pm has a new method that inserts the Authentication-Results header
The smtp-auth information has been removed from the Received header
Authentication-Results providing plugins have been updated to store results in connection note