message: default create date
diff: @@ -6,7 +6,7 @@ const { Model, attr } = DS;
  export default Model.extend(TrackRelationships, {
  title: attr('string'),
  body: attr({ fieldType: '@cardstack/mobiledoc', defaultValue: emptyMobiledoc }),
  - created: attr('date'),
  + created: attr('date', { defaultValue: () => new Date() }),
  street: attr('string'),
  city: attr('string'),
  state: attr('string'),
  