fix how agreeing on a draw works

complete documentation of the network protocol

remove unnecessary fen.h include in main.c

rework network message codes + add NETCODE_ACCEPT_MOVE

change how a game is ended in multiplayer

add test data for games that are one move away from completion

fix regression in network play: we have to transmit capture/check(mate) flags

(0) -100 -30 -10 -7 +7 +10 tip

mercurial