Test

Various minor improvements before releasing version 3.3.1+ #703

Job	Run time
Python 3.8, Database sqlite	58s
Python 3.8, Database postgres	55s
Python 3.9, Database sqlite	59s
Python 3.9, Database postgres	54s
Python 3.10, Database sqlite	1m 38s
Python 3.10, Database postgres	1m 42s
Python 3.11, Database sqlite	1m 16s
Python 3.11, Database postgres	1m 7s
Python 3.12, Database sqlite	1m 15s
Python 3.12, Database postgres	1m 11s
Python pypy-3.9, Database sqlite	2m 28s
Python pypy-3.9, Database postgres	1m 42s
Python pypy-3.10, Database sqlite	2m 24s
Python pypy-3.10, Database postgres	1m 49s
	20m 18s

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