Add tests for anonymous queries w|w/o variables#139

Merged

jml merged 6 commits intohaskell-graphql:masterfrom

sunwukonga:tests/add-anonymousquery-test

Jan 16, 2018

Commits on Dec 20, 2017

Fix error when single query is anonymous.
sunwukonga
committed

Commits on Dec 23, 2017

Cut commented out code. Comment monoid instance.
sunwukonga
committed