• Fixed SchemaPrinter so that it uses late static bindings when extended (#747)
• Parse DirectiveDefinitionNode->locations as NodeList<NamedNode> (fixes AST::fromArray conversion) (#723)
• Parse Parser::implementsInterfaces as NodeList<NamedTypeNode> (fixes AST::fromArray conversion)
• Fix signature of Parser::unionMemberTypes to match actual NodeList<NamedTypeNode>