References RFC 2440 that is obsolete (see http://openpgp.org/about/standard/)
The current RFC is 4880.
Maybe also the signing processes described to generate values for VERSION.signature and ATTESTATION.proof need to be updated.
if you can do a bit of research and figure out some appropriate updates, we could potentially put this one in RM 1.0.4.
Agree with Thomas. Seems like a good update for RM 1.0.4.
OK this PR now has a CR linked.