Switched shooter to use the hybrid KF.

Change-Id: I4a25cffd9fa4877c3d0e79e74d75318045698aee
diff --git a/y2017/control_loops/superstructure/superstructure.q b/y2017/control_loops/superstructure/superstructure.q
index 5a50a06..0f707dc 100644
--- a/y2017/control_loops/superstructure/superstructure.q
+++ b/y2017/control_loops/superstructure/superstructure.q
@@ -102,6 +102,7 @@
 
   // The current velocity measured as delta x / delta t in radians/sec.
   double instantaneous_velocity;
+  double fixed_instantaneous_velocity;
 
   // The error between our measurement and expected measurement in radians.
   double position_error;