Add Sphinx docs and enable ReadTheDocs build #34

Job	Run time
Check code is formatted (Black)	12s
Check code is formatted (Black)	12s
Build docs (Sphinx)	1m 5s
Build docs (Sphinx)	1m 5s
pytest (linux/3.8/dev)	1m 52s
pytest (linux/3.8/dev)	1m 52s
pytest (win64/3.8/dev)	5m 53s
pytest (win64/3.8/dev)	5m 53s
pytest (linux/3.9/dev)	1m 37s
pytest (linux/3.9/dev)	1m 37s
pytest (win64/3.9/dev)	5m 39s
pytest (win64/3.9/dev)	5m 39s
pytest (linux/3.10/dev)	2m 1s
pytest (linux/3.10/dev)	2m 1s
pytest (win64/3.10/dev)	6m 6s
pytest (win64/3.10/dev)	6m 6s
pytest (linux/3.11/dev)	2m 6s
pytest (linux/3.11/dev)	2m 6s
pytest (win64/3.11/dev)	6m 6s
pytest (win64/3.11/dev)	6m 6s
pytest (linux/3.8/standard)	1m 9s
pytest (linux/3.8/standard)	1m 9s
pytest (win64/3.8/standard)	3m 24s
pytest (win64/3.8/standard)	3m 24s
pytest (linux/3.9/standard)	1m 11s
pytest (linux/3.9/standard)	1m 11s
pytest (win64/3.9/standard)	2m 43s
pytest (win64/3.9/standard)	2m 43s
pytest (linux/3.10/standard)	1m 6s
pytest (linux/3.10/standard)	1m 6s
pytest (win64/3.10/standard)	4m 17s
pytest (win64/3.10/standard)	4m 17s
pytest (linux/3.11/standard)	59s
pytest (linux/3.11/standard)	59s
pytest (win64/3.11/standard)	4m 37s
pytest (win64/3.11/standard)	4m 37s
Upload coverage report (Codecov)	5s
Upload coverage report (Codecov)	7s
	1h 44m 18s

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