Make a DurationInSeconds function

Also, run clang-format on all the files I changed because I am too lazy
to figure out how to call clang-format on just the lines I changed.

Change-Id: I071c6f81dced533a0a269f25a258348132a7056a
diff --git a/y2017/control_loops/superstructure/column/column.h b/y2017/control_loops/superstructure/column/column.h
index 73da9b9..4a4dfbd 100644
--- a/y2017/control_loops/superstructure/column/column.h
+++ b/y2017/control_loops/superstructure/column/column.h
@@ -148,9 +148,7 @@
   status->voltage_error = X_hat(5, 0);
   status->calculated_velocity =
       (turret_position() - turret_last_position_) /
-      ::std::chrono::duration_cast<::std::chrono::duration<double>>(
-          ::aos::controls::kLoopFrequency)
-          .count();
+      ::aos::time::DurationInSeconds(::aos::controls::kLoopFrequency);
 
   status->estimator_state = EstimatorState(0);