downgraded torchvision to 0.1.8 (available in traditional conda channles)

conda/meta.yaml

@@ -28,7 +28,7 @@ requirements:
     - setuptools
     - docopt {{ docopt }}
     - pytorch =0.2.0
-    - torchvision =0.1.9
+    - torchvision =0.1.8
 test:
   imports:
     - {{ name }}