normalize angles on the jevois

Change-Id: I051ebc9929512385654d422f3925a973ecae82d1
diff --git a/y2019/vision/BUILD b/y2019/vision/BUILD
index e19c8cd..186850c 100644
--- a/y2019/vision/BUILD
+++ b/y2019/vision/BUILD
@@ -67,6 +67,7 @@
     restricted_to = VISION_TARGETS,
     deps = [
         ":constants",
+        "//aos/util:math",
         "//aos/vision/blob:contour",
         "//aos/vision/blob:hierarchical_contour_merge",
         "//aos/vision/blob:region_alloc",