Made hanging work.

Change-Id: I02f7601c530387a1d9c03c0995544a8541466231
diff --git a/y2016/control_loops/superstructure/superstructure.h b/y2016/control_loops/superstructure/superstructure.h
index 4e76a2b..0fb851a 100644
--- a/y2016/control_loops/superstructure/superstructure.h
+++ b/y2016/control_loops/superstructure/superstructure.h
@@ -111,6 +111,7 @@
           &control_loops::superstructure_queue);
 
   static constexpr double kZeroingVoltage = 6.0;
+  static constexpr double kShooterHangingVoltage = 6.0;
   static constexpr double kOperatingVoltage = 12.0;
   static constexpr double kLandingShoulderDownVoltage = -1.5;