Rewrite documentation in mkdocs #37

Job	Run time
Test against different Python versions (3.7, ubuntu-latest)	26s
Test against different Python versions (3.7, windows-latest)	1m 15s
Test against different Python versions (3.7, macos-latest)	43s
Test against different Python versions (3.8, ubuntu-latest)	29s
Test against different Python versions (3.8, windows-latest)	1m 20s
Test against different Python versions (3.8, macos-latest)	45s
Test against different Python versions (3.9, ubuntu-latest)	27s
Test against different Python versions (3.9, windows-latest)	1m 37s
Test against different Python versions (3.9, macos-latest)	58s
Test against different Python versions (3.10, ubuntu-latest)	27s
Test against different Python versions (3.10, windows-latest)	1m 39s
Test against different Python versions (3.10, macos-latest)	41s
Test against different Python versions (3.11, ubuntu-latest)	32s
Test against different Python versions (3.11, windows-latest)	1m 40s
Test against different Python versions (3.11, macos-latest)	46s
	13m 45s

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