Added new valid smearing type that is present at least in CASTEP and Quantum Espresso.

meta_info/nomad_meta_info/public.nomadmetainfo.json

@@ -3552,7 +3552,7 @@
         "section_single_configuration_calculation"
       ]
     }, {
-      "description": "Specifies the kind of smearing on the electron occupation used to calculate the free energy (see energy_free)\n\nValid values are:\n\n| Smearing kind             | Description                       |\n| ------------------------- | --------------------------------- |\n| `\"empty\"`                 | No smearing is applied            |\n| `\"gaussian\"`              | Gaussian smearing                 |\n| `\"fermi\"`                 | Fermi smearing                    |\n| `\"marzari-vanderbilt\"`    | Marzari-Vanderbilt smearing       |\n| `\"methfessel-paxton\"`     | Methfessel-Paxton smearing        |\n| `\"tetrahedra\"`            | Interpolation of state energies and occupations (ignores smearing_width) |",
+      "description": "Specifies the kind of smearing on the electron occupation used to calculate the free energy (see energy_free)\n\nValid values are:\n\n| Smearing kind             | Description                       |\n| ------------------------- | --------------------------------- |\n| `\"empty\"`                 | No smearing is applied            |\n| `\"gaussian\"`              | Gaussian smearing                 |\n| `\"fermi\"`                 | Fermi smearing                    |\n| `\"marzari-vanderbilt\"`    | Marzari-Vanderbilt smearing       |\n| `\"methfessel-paxton\"`     | Methfessel-Paxton smearing        |\n| `\"gaussian-splines\"`      | Gaussian spline smearing          |\n| `\"tetrahedra\"`            | Interpolation of state energies and occupations (ignores smearing_width) |",
       "dtypeStr": "C",
       "name": "smearing_kind",
       "shape": [],

meta_info/nomad_meta_info2/public.nomadmetainfo.json

@@ -4654,6 +4654,7 @@
       "| `\"fermi\"`                 | Fermi smearing                    |\n",
       "| `\"marzari-vanderbilt\"`    | Marzari-Vanderbilt smearing       |\n",
       "| `\"methfessel-paxton\"`     | Methfessel-Paxton smearing        |\n",
+      "| `\"gaussian-splines\"`      | Gaussian spline smearing          |\n",
       "| `\"tetrahedra\"`            | Interpolation of state energies and occupations ",
       "(ignores smearing_width) |"],
     "meta_parent_section":"section_method",