message: Add missing constructor for FormDataExtended
  Existed since FormDataExtended was created, at least since 0.7.10
diff: @@ -19,7 +19,7 @@ declare class FormDataExtended extends FormData {
  */
  constructor(
  form: HTMLFormElement,
  - { editors, dtypes }: { editors?: FormDataExtended['editors']; dtypes?: FormDataExtended['dtypes'] }
  + { editors, dtypes }?: { editors?: FormDataExtended['editors']; dtypes?: FormDataExtended['dtypes'] }
  );
  /**
  