Update readme, make it ready for release #174

Job	Run time
Test documentation website generation	0s
Cross-arch tests with nox (arm64, ubuntu-20.04, 3.11, pytest_min)	4m 47s
Build distribution packages	22s
Cross-arch tests with nox (arm64, ubuntu-20.04, 3.11, pytest_max)	4m 55s
Test with nox (ubuntu-20.04, 3.11, ci_checks_max)	1m 24s
Test with nox (ubuntu-20.04, 3.11, pytest_min)	1m 4s
Test package installation in different architectures	2m 43s
Test with nox	1s
Cross-arch tests with nox	1s
Publish documentation website to GitHub pages	34s
Create GitHub release	0s
Publish packages to PyPI	0s
	15m 51s

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