Added support for varying log levels configurable in the server config (see log_level in default.conf)

Error logs now properly print to stderr when possible
Colour-coded logs
Addressed a scenario in which outgoing packet writes could get hung up
Fixed interface incorrect definition message on server startup

Server/src/main/core/net/IoEventHandler.java

@@ -72,7 +72,10 @@ public class IoEventHandler {
 				session.disconnect();
 				if (session.getPlayer() != null)
 					session.getPlayer().clear(true);
-			} else e.printStackTrace();
+			} else {
+				key.cancel();
+				return;
+			}
 		}
 		buffer.flip();
 		if (session == null) {