Empty selections work with printer, but throw a parser error

[brysgo]

(Thanks again for writing these awesome tools!)

Expectation: GraphQL printed by printer always parses as valid

Result: If printing GraphQL that has an empty selection, subsequent parsing of the GraphQL throws a parser error.

This doesn't have a huge impact unless you are trying to write tools to manipulate graphql language and reprint it. Hence, probably pretty low priority but I figured I'd point it out.

[leebyron]

Thanks for the report. I've fixed this in the master branch and will have a release soon.