v0.6.0

This release includes support for graphql@0.8.0, which supports the October 2016 edition of the GraphQL specification.

New/Fixes:

• Adds ability to supply an extensions field in the response. (#79)
• Sends a 500 status code when the request failed to produce data in the response (#77)
• Uses the latest version of GraphiQL.

Breaking:

• Pass response as second argument to thunk, ctx as third. (#52, #80)