v2.8.0

Changelog

New features

• Add headers arg to GraphQLTestCase.query (#827)
• Read csrftoken from DOM if no cookie is set in graphiql browser (#826)
• Add support for partial updates when using Django Rest Framework serializers (#731)
• Raise exceptions if fields defined in Meta.fields and Meta.exclude on DjangoObjectType don't exist (#842)

Full changelog: v2.7.1...v2.8.0