v1.2.0

Graphman now properly supports UNION types.
It will fill operations bodies with each union type to produce an output like:

query myUnionQuery {
  myUnionQuery {
     __typename
     ...on UnionType1 {
       __typename
       scalar,
       # object
     }
     ...on UnionType2 {
       __typename
       scalar,
       # object
     }
  }
}