Added plumbing for piston values through elevator/intake code.

Change-Id: I786fbc1411bc26063a7b03ea5428297317d21daa
diff --git a/bot3/control_loops/intake/intake.q b/bot3/control_loops/intake/intake.q
index 3047f6b..c09bf87 100644
--- a/bot3/control_loops/intake/intake.q
+++ b/bot3/control_loops/intake/intake.q
@@ -7,13 +7,18 @@
 
   message Goal {
     // Positive = suck, negative = spit, zero = stationary.
-    int16_t movement;
+    double movement;
+
+    bool claw_closed;
   };
 
   message Position {};
 
   message Output {
+    // Positive or negative, depending on whether we're sucking or spitting.
     double intake;
+
+    bool claw_closed;
   };
 
   message Status {};