'vdW-DF-cx0p' was added as a standard choice for input_dft.
- 'vdW-DF-cx0p' was added as a standard choice for input_dft. [Y. Jiao, E. Schröder and P. Hyldgaard, J. Chem. Phys. 148, 194115 (2018)]
- Some igcx are reserved for vdW-DF functionals under development.