How to disable cache? #39

Thank you for sharing this module.
I'm writing tests for Datasource extending it and I've found the cache getting in the way.
I'm mocking knex using jest-mock-knex to return different responses.
The challenge is the query is the same, therefore the key in the cache is the same and the object is returned.
I've tried passing .cache(0) so as to prevent caching at all but this did not work.
Please advise. If there is a potential change in the module needed, I would be glad to collaborate with a PR.
Thanks