Add test on blocking due to PDL penalty #272

Job	Run time
Tox test (py38)	2m 37s
Tests on other platforms (windows-2019, 3.10)	3m 7s
Tox test (py39)	2m 38s
Tests on other platforms (windows-2022, 3.11)	3m 24s
Tests on paywalled platforms	0s
Tox test (py310)	2m 35s
Tests on other platforms (windows-2022, 3.12)	3m 3s
Tox test (py311)	2m 34s
Tests on other platforms (macos-12, 3.11)	3m 40s
Tox test (py312-cover)	5m 17s
Tests on other platforms (macos-13, 3.12)	2m 54s
Tox test (docs, graphviz)	2m 8s
PyPI packaging	0s
Docker image	0s
	33m 57s

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