Rewrite documentation in mkdocs #21

Job	Run time
Test against different Python versions (3.7, ubuntu-latest)	32s
Test against different Python versions (3.7, windows-latest)	1m 21s
Test against different Python versions (3.7, macos-latest)	1m 22s
Test against different Python versions (3.8, ubuntu-latest)	25s
Test against different Python versions (3.8, windows-latest)	2m 5s
Test against different Python versions (3.8, macos-latest)	50s
Test against different Python versions (3.9, ubuntu-latest)	27s
Test against different Python versions (3.9, windows-latest)	2m 1s
Test against different Python versions (3.9, macos-latest)	1m 16s
Test against different Python versions (3.10, ubuntu-latest)	42s
Test against different Python versions (3.10, windows-latest)	1m 45s
Test against different Python versions (3.10, macos-latest)	1m 0s
Test against different Python versions (3.11, ubuntu-latest)	35s
Test against different Python versions (3.11, windows-latest)	1m 49s
Test against different Python versions (3.11, macos-latest)	40s
	16m 50s

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