Minify query strings

[spawnia]

Is your feature request related to a problem? Please describe.

Query strings could be printed more compactly by omitting some whitespace. This would shave off a few bytes from each request and make both transmission and parsing quicker.

Describe the solution you'd like

{
  foo(bar: "baz")
}

{foo(bar:"baz")}

Describe alternatives you've considered

Leave them pretty printed.