Roadmap Queries Mutations and Subscriptions

[gblikas]

Just took a look at this project, and it's a great framework to get started with queries, but are you guys planning on expanding graphql-bench to be used with mutations, and subscriptions?

It's clear that you guys have an emphasis on queries in your current readme.

Having some sort of "driver" interface would be really nice, especially if we could use a syntax similar to faker for mutations. It's no easy undertaking.