Because only the host/inviter knows the addresses of all the devices
in a game it's hard for guests to rematch (unless it's a 2-device
game, as they know the host's address.) So now, as part of telling
guests the game is ready to play, include the addresses of other
guests. It's usually only 9 bytes per device, and only happens when
more than two devices are in a game.
needs to save it there on receipt of an invitation (doesn't create
full game with comms until later.) Passes discon2 tests and seems to
work on a single Android device. (Haven't tested inviting on Android
yet.)
