me: take over oid management from gateway
book: make cancels work correctly, and just off of orderid
me: handle ownership of orders to permission cancels and avoid self-match
book: ignore cancels for unknown order
me: add basic chess replay multicast too
gui: start work on hooking up gui to me
me: send new-game and then repeat same game for now
gui: real gui shows board and ladder from ME multicast
me/book/gui: support recovery of both board and book
gui: handle drops and result display
gui: clear result for next game
me: send empty recovery when no orders; speed up games but delay between
me: factor out recovery code