Add tests for object releasing #864

Job	Run time
Test Codegen	40s
Test Linting	16s
Test Imports	16s
Test Docs	41s
Test Linux py37	1m 5s
Test Linux py38	1m 21s
Test Linux py39	1m 19s
Test PyInstaller	1m 53s
Test Linux py310	1m 39s
Test Examples	1m 13s
Test Linux py311	1m 4s
Build wheels on ubuntu-latest	1m 13s
Build sdist	39s
Build wheels on windows-latest	2m 27s
Build wheels on macos-latest	2m 10s
Publish to Github and Pypi	0s
	17m 56s

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