run control loops and write their output on new sensor values

This also includes sending solenoid values from their own thread at 50Hz
(formerly I613f95a6efb5efe428029e4825ba6caeb34ea326).

Change-Id: I3d3021cdbbf2ddf895e5ceebd4db299b4743e124
diff --git a/frc971/control_loops/drivetrain/drivetrain.h b/frc971/control_loops/drivetrain/drivetrain.h
index cba0e9a..f1b0453 100644
--- a/frc971/control_loops/drivetrain/drivetrain.h
+++ b/frc971/control_loops/drivetrain/drivetrain.h
@@ -13,14 +13,13 @@
 namespace control_loops {
 
 class DrivetrainLoop
-    : public aos::controls::ControlLoop<control_loops::Drivetrain, true, false> {
+    : public aos::controls::ControlLoop<control_loops::Drivetrain> {
  public:
   // Constructs a control loop which can take a Drivetrain or defaults to the
   // drivetrain at frc971::control_loops::drivetrain
   explicit DrivetrainLoop(
       control_loops::Drivetrain *my_drivetrain = &control_loops::drivetrain)
-      : aos::controls::ControlLoop<control_loops::Drivetrain, true, false>(
-          my_drivetrain) {
+      : aos::controls::ControlLoop<control_loops::Drivetrain>(my_drivetrain) {
     ::aos::controls::HPolytope<0>::Init();
   }