Fixes for numpy 2.0 #33

Job	Run time
setup (ubuntu-latest)	27s
coverage	51s
setup (windows-latest)	1m 41s
pytest (3.8, py38, ubuntu-latest)	50s
test_pre_commit	26s
setup (macos-latest)	32s
pytest (3.8, py38, windows-latest)	2m 7s
pytest (3.8, py38, macos-latest)	1m 12s
pytest (3.9, py39, ubuntu-latest)	50s
pytest (3.9, py39, windows-latest)	2m 13s
pytest (3.9, py39, macos-latest)	43s
pytest (3.10, py310, ubuntu-latest)	49s
pytest (3.10, py310, windows-latest)	1m 45s
pytest (3.10, py310, macos-latest)	38s
pytest (3.11, py311, ubuntu-latest)	49s
pytest (3.11, py311, windows-latest)	2m 11s
pytest (3.11, py311, macos-latest)	42s
pytest (ubuntu-latest, 3.8, tensorflow-27)	1m 17s
pytest (ubuntu-latest, 3.9, tensorflow-28)	1m 16s
pytest (ubuntu-latest, 3.10, tensorflow-29)	1m 40s
pytest (ubuntu-latest, 3.10, tensorflow-210)	1m 11s
pytest (ubuntu-latest, 3.10, tensorflow-211)	1m 12s
pytest (ubuntu-latest, 3.9, numpy-120)	51s
pytest (ubuntu-latest, 3.10, numpy-121)	50s
pytest (ubuntu-latest, 3.10, numpy-123)	48s
pytest (ubuntu-latest, 3.11, numpy-124)	47s
	28m 38s

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