Must the actor be an Actor? Also, Actors are no longer a true super-type. #193
Description
Related to #192, the actors section is somewhat vague on what an actor is allowed to be. There are two statements:
Actors are [ActivityStreams] Objects, generally one of the ActivityStreams Actor Types, and are retrieved like any other Object in ActivityPub.
and
Actor objects are ActivityStreams objects which are subclasses of the Actor type.
That last one is even incorrect, because AS2 no longer has an Actor supertype (it used to, but it was removed... I still think that was a mistake, but whatever).
My gut feeling is that the first of these two statements is the more correct one; an actor is probably one of the official AS2 actor types. But #192 also opens up the possibility that it can be at least a Profile too.