Merge & unify running state event intervals #339

Job	Run time
Cross-arch tests with nox	0s
Build distribution packages	16s
Test with nox (ubuntu-20.04, 3.11, ci_checks_max)	1m 15s
Test documentation website generation	36s
Test with nox (ubuntu-20.04, 3.11, pytest_min)	51s
Cross-arch tests with nox	0s
Test package installation in different architectures	2m 50s
Test with nox	1s
Publish documentation website to GitHub pages	0s
Create GitHub release	0s
Publish packages to PyPI	0s
	5m 49s

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