Returns a COHP object from a dict representation of the COHP.

def from_dict(cls, d):
        """
        Returns a COHP object from a dict representation of the COHP.

        """
        if "ICOHP" in d:
            icohp = {Spin(int(key)): np.array(val)
                     for key, val in d["ICOHP"].items()}
        else:
            icohp = None
        return Cohp(d["efermi"], d["energies"],
                    {Spin(int(key)): np.array(val)
                     for key, val in d["COHP"].items()},
                    icohp=icohp, are_coops=d["are_coops"])