def heating_values(self):
        """Return a dict of all the current heating values."""
        heating_dict = {
            'level': self.heating_level,
            'target': self.target_heating_level,
            'active': self.now_heating,
            'remaining': self.heating_remaining,
            'last_seen': self.last_seen,
        }
        return heating_dict
Return a dict of all the current heating values.