relaxed constraints on pytorch and torchvision versions

conda/meta.yaml

@@ -30,8 +30,8 @@ requirements:
     - python
     - setuptools
     - numpy >=1.11
-    - pytorch =0.4
-    - torchvision =0.2.0
+    - pytorch >=0.4
+    - torchvision >=0.2.0
 test:
   imports:
     - {{ name }}

requirements.txt

@@ -3,5 +3,5 @@ numpy
 bob.extension
 bob.core
 bob.bio.base
-torch == 0.4.0
-torchvision == 0.2.0
+torch >= 0.4.0
+torchvision >= 0.2.0