docs: def days(start, stop):
      """
      Return days between start & stop (inclusive)
      
      Note that start must be less than stop or else 0 is returned.
      
      @param start: Start date
      @param stop: Stop date
      @return int
      """
      dates=rrule.rruleset()
      # Get dates between start/stop (which are inclusive)
      dates.rrule(rrule.rrule(rrule.DAILY, dtstart=start, until=stop))
      return dates.count()