Handle turret wrapping more intelligently in Aimer

This now has actually reasonable logic for handling the turret's full
range of motion. Note that I did have to up the turret range constants a
bit to make it work, since they had just been set to +/-PI previously.

Change-Id: I9c11b56d720cf4aa5064a7f0b9cc5609205b7df7
diff --git a/y2020/control_loops/superstructure/turret/BUILD b/y2020/control_loops/superstructure/turret/BUILD
index 8403e7c..010c6fd 100644
--- a/y2020/control_loops/superstructure/turret/BUILD
+++ b/y2020/control_loops/superstructure/turret/BUILD
@@ -41,6 +41,7 @@
         "//frc971/control_loops:pose",
         "//frc971/control_loops:profiled_subsystem_fbs",
         "//frc971/control_loops/drivetrain:drivetrain_status_fbs",
+        "//y2020:constants",
         "//y2020/control_loops/drivetrain:drivetrain_base",
         "//y2020/control_loops/superstructure:superstructure_status_fbs",
     ],