missing param in docs
Person docs
No need to unserialize on Person.init

We already add all missing attributes on Pumpobject init
use self._verb for follow/stop-following
Clean up Person

Remove all init params except webfinger, they get overwritten when
unserializing on init anyway.
Remove assumption that webfinger may actually be a username for an
account on the server we're currently logged in to, webfinger is
supposed to be a unique ID.
More Person docs