Prepare release 0.4.0 #393

Job	Run time
rust-test (ubuntu-latest)	46s
rust-test (macos-latest)	48s
rust-test (windows-latest)	2m 28s
no_std and miri (ubuntu-latest)	4m 19s
python-test (3.8, ubuntu-latest)	39s
no_std and miri (macos-latest)	6m 35s
python-test (3.8, macos-latest)	1m 7s
python-test (3.8, windows-latest)	2m 30s
python-test (3.9, ubuntu-latest)	48s
no_std and miri (windows-latest)	6m 1s
python-test (3.9, macos-latest)	40s
python-test (3.9, windows-latest)	1m 37s
python-test (3.10, ubuntu-latest)	47s
python-test (3.10, macos-latest)	43s
python-test (3.10, windows-latest)	2m 18s
python-test (3.11, ubuntu-latest)	44s
python-test (3.11, macos-latest)	41s
python-test (3.11, windows-latest)	3m 29s
python-test (3.12, ubuntu-latest)	51s
python-test (3.12, macos-latest)	41s
python-test (3.12, windows-latest)	2m 49s
Meta job for all tests	1s
	41m 22s

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