dupe() {
    const jso = extend(true, { }, this);
    const rnew = new FreshResume();
    rnew.parseJSON(jso, { });
    return rnew;
  }
Duplicate this FreshResume instance.
  This method first extend()s this object onto an empty, creating a deep copy,
  and then passes the result into a new FreshResume instance via .parseJSON.
  We do it this way to create a true clone of the object without re-running any
  of the associated processing.