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Parameterize contingency #1881

Job	Run time
docs	57s
check	39s
py310 (ubuntu)	12m 5s
py39 (windows)	12m 45s
py38 (ubuntu)	11m 25s
py310 (windows)	13m 52s
py39 (ubuntu)	11m 49s
py311 (windows)	15m 0s
py311 (ubuntu)	11m 31s
py311 (macos)	10m 56s
Deploy docs to GitHub Pages	0s
Upload coverage to Coveralls	-1s
	1h 40m 58s

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