Get delivery date (estimated or actual).

def _get_delivery_date(row):
    """Get delivery date (estimated or actual)."""
    try:
        month = row.find('div', {'class': 'date-small'}).string
        day = row.find('div', {'class': 'date-num-large'}).string
    except AttributeError:
        return None
    try:
        return parse('{} {}'.format(month, day)).date()
    except ValueError:
        return None