v0.7.7

Fixed

• Chat transfer reads department_id. POST /agent/chat/<id>/transfer/ took only agent_id, so the shared ticket
  view's Transfer menu (which offers departments and posts
  {"department_id"}) was refused with 400. It now reads agent_id and/or
  department_id, as escalated-laravel does: a department takes the ticket,
  and without an agent the chat goes back to the queue (unassigned, waiting)
  and routing runs again for that department. The older {"type", "id"} body
  is read too, and agent_id alone behaves as before. An unknown department
  is a 404. chat.transferred now carries to_department_id, and the
  chat_transferred signal sends a to_department keyword (receivers taking
  **kwargs are unaffected).