Returns all input files as a dict of {filename: feffio object}

def all_input(self):
        """
        Returns all input files as a dict of {filename: feffio object}
        """
        d = {"HEADER": self.header(), "PARAMETERS": self.tags}

        if "RECIPROCAL" not in self.tags:
            d.update({"POTENTIALS": self.potential, "ATOMS": self.atoms})

        return d