docs: def dateint_difference(dateint1, dateint2):
      """Return the difference between two dateints in days.
  
      Arguments
      ---------
      dateint1 : int
          An integer object decipting a specific calendaric day; e.g. 20161225.
      dateint2 : int
          An integer object decipting a specific calendaric day; e.g. 20161225.
  
      Returns
      -------
      int
          The difference between the two given dateints in days.
      """
      dt1 = dateint_to_datetime(dateint1)
      dt2 = dateint_to_datetime(dateint2)
      delta = dt1 - dt2
      return abs(delta.days)