Date widget

It is the second time I define my own widget to display a date :

  <sib-widget name="rfm-date">
    <template>
      <span>${moment(value).format("DD MMMM")}</span>
    </template>
  </sib-widget>

Do we want to include this to sib-core ?

The question behind is : do we want to have momentjs as a dependency ?