#22 Advanced diplomacy

[Kimmo Merikivi]

There should be more advanced diplomacy. There is also
"peace"-state, you cannot team-win but units don't
automatically attack (if you attack to other players
units, it automatically puts you to war). There should
be also peace/alliance _offer_, not automatically go to
peace/alliance. You should also be able to give
resources, buildings and units to other players (and
maybe should share researchs with allies) and have
private-chat in multiplayer.