Add def2-mSVP basis set for PBEh-3c and HSE-3c

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• Brandenburg, Jan Gerit, Eike Caldeweyher, and Stefan Grimme. "Screened exchange hybrid density functional for accurate and efficient structures and interaction energies." Phy. Chem. Chem. Phys. 18.23 (2016): 15519-15523. DOI: 10.1039/C6CP01697A
• Grimme, Stefan, Jan Gerit Brandenburg, Christoph Bannwarth, and Andreas Hansen. "Consistent structures and interactions by density functional theory with small atomic orbital basis sets." J. Chem. Phys 143.5 (2015). DOI: 10.1063/1.4927476