Default values and missing variables

[benwilson512]

Suppose:

field :thing, :thing do
  arg :id, :id, default_value: "1"
end

query Foo($id: ID) {
  thing(id: $id)
}

If you don't pass in an id variable the default is not selected.

[bruce]

@benwilson512 Take a peek at this; believe this is handled in the v1.2 branch (if so, close it).

[bruce]

@benwilson512 Confirm, this is being handled in #160.

[benwilson512]

Fixed in v1.2 beta 0