DOC: Convert README to markdown, add wasm links #90

Job	Run time
build-test-cxx (ubuntu-20.04)	23m 32s
build-test-cxx (windows-2022)	30m 43s
build-test-cxx (macos-11)	40m 4s
python-build-workflow / build-linux-python-packages (37)	4m 7s
python-build-workflow / build-linux-python-packages (38)	3m 5s
python-build-workflow / build-linux-python-packages (39)	1s
python-build-workflow / build-linux-python-packages (310)	1s
python-build-workflow / build-macos-python-packages	51m 30s
python-build-workflow / build-linux-python-packages (311)	1s
python-build-workflow / build-windows-python-packages (7)	19m 41s
python-build-workflow / build-windows-python-packages (8)	18m 5s
python-build-workflow / build-windows-python-packages (9)	13m 53s
python-build-workflow / build-windows-python-packages (10)	11m 55s
python-build-workflow / build-windows-python-packages (11)	18m 16s
python-build-workflow / publish-python-packages-to-pypi	0s
	3h 54m 54s

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