#2 Request draw

[Peer Sommerlund]

The protocol does not contain any way to ask for a
draw.

It could be implemented as the player with the turn cry
foul with text "Draw?"
The opponent then answers "Draw rejected" or "Draw
acepted".
In the first case, the game is ended and a new can start.
In the second case the first player must respond with a
move. If he does not send a move (tries one more time)
then he forfeits the game.

Since foul currently means "terminate game" it is
probably not the best way to do it.

Note the difference between players asking for a draw,
and a server forcing a draw onto players.