Fixed infinite loop in handlers when client connections terminate.
Server now prunes games after one hour of inactivity.
Can now specify inactive game pruning on command line.
Server now logs when games are pruned for inactivity.
Whoops, how'd that semicolon get in there?
Promoting client string to handler attribute.
Fixes #31: Disconnecting clients now cleanly leave games.
Explicitly excluding status updates to leaving client.