Tests

added minor type hinting #722

Job	Run time
Linux / Python 3.9 / tox -e security	28s
Linux / Python 3.10 / tox -e security	27s
Linux / Python 3.11 / tox -e security	23s
Linux / Python 3.10 / tox -e lint	26s
Linux / Python 3.9 / tox -e type-checking	33s
Linux / Python 3.10 / tox -e type-checking	45s
Linux / Python 3.11 / tox -e type-checking	29s
Linux / Python 3.9 / tox -e py39	4m 2s
Linux / Python 3.9 / tox -e py39-no-ext	3m 35s
Linux / Python 3.10 / tox -e py310	7m 0s
Linux / Python 3.10 / tox -e py310-no-ext	3m 46s
Linux / Python 3.11 / tox -e py311	3m 22s
Linux / Python 3.12 / tox -e py312	3m 36s
Linux / Python 3.12 / tox -e py312-no-ext	3m 32s
Linux / Python 3.13 / tox -e py313	6m 56s
Linux / Python 3.13 / tox -e py313-no-ext	3m 37s
Windows / Python 3.9 / tox -e py39-no-ext	4m 42s
Windows / Python 3.10 / tox -e py310-no-ext	4m 58s
Windows / Python 3.11 / tox -e py311-no-ext	4m 30s
	57m 7s

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