Clean up API a bit #349

Job	Run time
Cross-arch tests with nox	0s
Test with nox (ubuntu-20.04, 3.11, ci_checks_max)	1m 20s
Build distribution packages	19s
Test with nox (ubuntu-20.04, 3.11, pytest_min)	54s
Test documentation website generation	36s
Cross-arch tests with nox	0s
Test package installation in different architectures	2m 42s
Test with nox	1s
Publish documentation website to GitHub pages	0s
Create GitHub release	0s
Publish packages to PyPI	0s
	5m 52s

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