config/game_messages.proto in game_machine-0.0.10 vs config/game_messages.proto in game_machine-0.0.11

@@ -5,9 +5,10 @@
 
 message TrackExtra {
   optional float speed = 1;
   optional float velocity = 2;
   optional Vector3 direction = 3;
+  optional string json = 4;
 }
 
 message Health {
   required  int32  health = 1;
 }