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- Add ``snb-mag`` function, and automatically check the magnetisation from ``ISPIN = 2`` ``OUTCAR`` files when continuing
relaxations with ``snb-run`` (and change to ``ISPIN = 1`` if magnetisation is negligible).
- Update handling of minimum distances and oxidation states, to deal with single-atom primitive unit cells and
systems where ``pymatgen`` cannot guess the oxidation state (e.g. single-elements, intermetallics etc).
- Docs updates