0.9.0b4

Better

• Each person has a "last seen" sensor. Next to Ole seen by (which camera sees them now; was
  just Ole), Ole last seen shows in Home Assistant when they were last seen, also when you
  confirmed afterwards that a frame was them. New installs name them
  sensor.visionstate_ole_seen_by and sensor.visionstate_ole_last_seen; entities you already
  have keep their IDs.
• Answering a question marks the whole moment in the History: the face seen entry of the
  same frame says Taught: Ole too.