add simple docs and cleanup #250

Job	Run time
Eager mode tests for Python 3.8	38s
Eager mode tests for Python 3.8	39s
Eager mode tests for Python 3.8	37s
JIT compiled tests for Python 3.8	39s
JIT compiled tests for Python 3.8	24s
JIT compiled tests for Python 3.8	39s
Eager mode tests for Python 3.9	39s
Eager mode tests for Python 3.9	44s
Eager mode tests for Python 3.9	1m 51s
Eager mode tests for Python 3.10	36s
Eager mode tests for Python 3.10	38s
Eager mode tests for Python 3.10	1m 47s
JIT compiled tests for Python 3.9	39s
JIT compiled tests for Python 3.9	38s
JIT compiled tests for Python 3.9	2m 46s
Eager mode tests for Python 3.11	36s
Eager mode tests for Python 3.11	37s
Eager mode tests for Python 3.11	1m 54s
JIT compiled tests for Python 3.10	40s
JIT compiled tests for Python 3.10	44s
JIT compiled tests for Python 3.10	1m 52s
JIT compiled tests for Python 3.11	36s
JIT compiled tests for Python 3.11	40s
JIT compiled tests for Python 3.11	2m 21s
	23m 54s

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