Added logging of collision detection.

Change-Id: I5f3d3def6a0ea81e4e2c589471f23a07e409d304
diff --git a/y2016/control_loops/superstructure/superstructure.q b/y2016/control_loops/superstructure/superstructure.q
index 0883446..5d17fb6 100644
--- a/y2016/control_loops/superstructure/superstructure.q
+++ b/y2016/control_loops/superstructure/superstructure.q
@@ -83,6 +83,9 @@
     JointState wrist;
 
     int32_t shoulder_controller_index;
+
+    // Is the superstructure collided?
+    bool is_collided;
   };
 
   message Position {