Return a stream as well from graphql* functions

graphql.cabal

@@ -4,7 +4,7 @@ cabal-version: 1.12
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: f3469205f704a81ee0f55655758cf588a9e9eb52303dadd58def32a2eb207696
+-- hash: ca820b1bb2b81ffca4a3e2563bfa2be5381d80eaf4085595e07cf7db2aa3c6a9
 
 name:           graphql
 version:        0.8.0.0
@@ -51,6 +51,7 @@ library
       Language.GraphQL.Type.In
       Language.GraphQL.Type.Out
       Language.GraphQL.Type.Schema
+      Test.Hspec.GraphQL
   other-modules:
       Language.GraphQL.Execute.Execution
       Language.GraphQL.Execute.Subscribe
@@ -65,6 +66,7 @@ library
     , conduit
     , containers
     , exceptions
+    , hspec-expectations
     , megaparsec
     , parser-combinators
     , scientific