Merge pull request #287 from asherf/jerry

default_app_config needs to be set only in older django versions

Author: asherf

django_prometheus/__init__.py

@@ -21,5 +21,5 @@
     # If people don't have pip, don't export anything.
     pass
 
-if django.VERSION < (3, 2):
+if django.VERSION < (3, 1):
     default_app_config = "django_prometheus.apps.DjangoPrometheusConfig"