Further work on atoms
New proposed text for error handling
Work on the atoms to distinguish singletons vs. list
Stub in Andrew Lange in the authors section
Remove Sub-.  Additionally update IANA considerations.
Update example.
Add generic as4 wide community
Initial -04 candidate.
Typo
Update Andrew's postal info.
Include Bruno's edits. Refresh -04 txt.
Further edits from Bruno's feedback
Adjust TLVs to use length of payload only.
Edits suggested by Andrew
Update -04.txt
Merge branch 'jhaas/04-proposed'