store some kind of byte order mark?
+ world and player names should be normalized so they can safely
+ be used in path names
+
networking
definitely needs throttling for the internets
players stats (who's connected, their ping, and game-relevant
things) should be sent to clients
+ some method for authenticating a player might be nice
+
+ maybe stale and inexistent chunks should be visualized (e.g. by
+ drawing a semi-transparent box around them)
+
threading
(clientside) networking and disk IO are prime candidates for threading