Tests

Replace ase `ExpCellFilter` with `FrechetCellFilter` in `StructOptimizer` #423

Job	Run time
tests (ubuntu-latest)	7m 20s
tests (macos-latest)	11m 14s
tests (windows-latest)	15m 24s
Build source distribution	0s
Build wheels for Python ${{ matrix.python-version }} on ${{ matrix.os }}	0s
Release wheels and source distribution to PyPI	0s
	33m 58s

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