Test

Add basic typing support #632

Job	Run time
Python 3.8, Database sqlite	1m 19s
Python 3.8, Database postgres	1m 14s
Python 3.9, Database sqlite	1m 30s
Python 3.9, Database postgres	1m 33s
Python 3.10, Database sqlite	2m 20s
Python 3.10, Database postgres	2m 18s
Python 3.11, Database sqlite	1m 49s
Python 3.11, Database postgres	1m 52s
Python 3.12, Database sqlite	1m 31s
Python 3.12, Database postgres	1m 27s
Python pypy-3.9, Database sqlite	2m 56s
Python pypy-3.9, Database postgres	2m 27s
Python pypy-3.10, Database sqlite	3m 7s
Python pypy-3.10, Database postgres	2m 39s
	28m 2s

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