Sundry tweaks to aos/vision libs

Change-Id: Ia5578dcf2d42ac53b81af239bf329eb084fcf1d9
diff --git a/aos/vision/blob/move_scale.h b/aos/vision/blob/move_scale.h
index c113bca..e45e14d 100644
--- a/aos/vision/blob/move_scale.h
+++ b/aos/vision/blob/move_scale.h
@@ -1,8 +1,8 @@
 #ifndef AOS_VISION_BLOB_MOVE_SCALE_H_
 #define AOS_VISION_BLOB_MOVE_SCALE_H_
 
-#include <vector>
 #include <limits>
+#include <vector>
 
 #include "aos/vision/blob/range_image.h"