made game.Game.MinimumRanking/MinimumReliability floats instead of ints. added game.Game.MaximumRanking for the junior league games. added a helper func to decide if a game disallows a user.
made game.Members#Disallows that decides if blacklistings disallow a user from joining the members.
made the game subscriptions not send empty game state slices. made the open game subscription filter out disallowed games.
made user.User.Ranking float instead of int. added helper funcs to get the blacklistings and reliability of a user.
made the game controller refuse to add disallowed members to games