Update name of python package

[gassmoeller]

It looks like sphinx_book_theme is actually sphinx-book-theme, see https://pypi.org/project/sphinx-book-theme/. Maybe it changed its name. Let's wait for the documentation tester before merging this to make sure the new version still works.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (d465a69) 93.49% compared to head (8c60ac3) 93.49%.
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #544   +/-   ##
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  Coverage   93.49%   93.49%           
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  Files          92       92           
  Lines        6346     6346           
=======================================
  Hits         5933     5933           
  Misses        413      413           

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[gassmoeller]

Ok, looks like the documentation tester succeeded with the new name. I compared the build logs of readthedocs before/after and they look the same. Probably sphinx_book_theme was the old name, but is still supported, but sphinx-book-theme is the new name (since it is the only one listed on pypi).

This should be good to go once the other testers have finished.

[github-actions]

Benchmark	Main	Feature	Difference (99.9% CI)
Slab interpolation simple none	1.020 ± 0.003 (s=435)	1.020 ± 0.005 (s=450)	-0.1% .. +0.1%
Slab interpolation curved simple none	1.028 ± 0.005 (s=443)	1.027 ± 0.004 (s=435)	-0.2% .. -0.0%
Spherical slab interpolation simple none	1.261 ± 0.008 (s=361)	1.260 ± 0.006 (s=355)	-0.2% .. +0.1%
Slab interpolation simple curved CMS	1.099 ± 0.004 (s=398)	1.100 ± 0.004 (s=423)	+0.0% .. +0.2%
Spherical slab interpolation simple CMS	1.856 ± 0.004 (s=239)	1.862 ± 0.006 (s=248)	+0.2% .. +0.4%
Spherical fault interpolation simple none	1.270 ± 0.007 (s=339)	1.270 ± 0.004 (s=372)	-0.1% .. +0.1%
Cartesian min max surface	2.362 ± 0.018 (s=199)	2.366 ± 0.018 (s=184)	-0.1% .. +0.4%
Spherical min max surface	7.370 ± 0.022 (s=53)	7.368 ± 0.021 (s=72)	-0.2% .. +0.2%