Fix opencv versions for compatibility (#228)

bobvo23 · web-flow · commit 56e8f6d7ffc9 · 2020-06-19T09:03:26.000+03:00
The latest opencv version cause compatibility issue for MacOS Sierra (10.12 or less)
By changing the numpy requirement to this version, all MacOS/Windows/Linux are compatible.
diff --git a/requirements_client.txt b/requirements_client.txt
@@ -3,4 +3,4 @@ PyYAML==5.1
 requests==2.23
 msgpack-numpy==0.4.5
 pyzmq==19.0.0
-opencv-python==3.4.9.33
+opencv-python==3.4.5.20
