build

Parameterize contingency #1879

Job	Run time
py38 (ubuntu)	11m 19s
py39 (windows)	12m 37s
docs	1m 17s
check	42s
py39 (ubuntu)	11m 45s
py310 (ubuntu)	11m 46s
py310 (windows)	13m 55s
py311 (windows)	14m 51s
py311 (ubuntu)	11m 38s
py311 (macos)	8m 22s
Upload coverage to Coveralls	0s
Deploy docs to GitHub Pages	0s
	1h 38m 12s

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