Update pytest from 3.10.1 to 4.0.0 (#516)
Update pytest from 3.10.1 to 4.0.0 (#516)


django-json-api/django-rest-framework-json-api,django-json-api/rest_framework_ember,django-json-api/django-rest-framework-json-api,leo-naeka/django-rest-framework-json-api