[Idea] Test against GraphQL Compatibility Acceptance Tests (CAT)

[alexstrat]

GraphQL Compatibility Acceptance Tests
The aim of this project is to provide a set of compatibility acceptance tests for libraries that implement the GraphQL specification.

https://github.com/graphql-cats/graphql-cats

[alexstrat]

Worth following graphql/graphql-js#1404

[DanielMSchmidt]

Thanks for the idea, I think this totally makes sense, so that this can become a fully fletched graphql implementation 👍