Updated WDs

Hi all,

Just a reminder (because yesterday's call was a long time ago) that
ActivityPub and Social Web Protocols got substantial updates recently, and
were published as updated WDs yesterday, though most people hadn't had
chance to review the changes. So... you should :)

https://www.w3.org/TR/activitypub
https://github.com/w3c-social/activitypub/issues

https://www.w3.org/TR/social-web-protocols
https://github.com/w3c-social/social-web-protocols/issues

Amy