tests

tests #169

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	1m 29s
Tests (8.1, ubuntu-latest, prefer-stable)	1m 30s
Tests (8.1, macos-latest, prefer-lowest)	1m 40s
Tests (8.1, macos-latest, prefer-stable)	1m 41s
Tests (8.1, windows-latest, prefer-lowest)	1m 35s
Tests (8.1, windows-latest, prefer-stable)	1m 39s
Tests (8.2, ubuntu-latest, prefer-lowest)	1m 15s
Tests (8.2, ubuntu-latest, prefer-stable)	1m 21s
Tests (8.2, macos-latest, prefer-lowest)	1m 43s
Tests (8.2, macos-latest, prefer-stable)	1m 42s
Tests (8.2, windows-latest, prefer-lowest)	1m 42s
Tests (8.2, windows-latest, prefer-stable)	1m 43s
Tests (8.3, ubuntu-latest, prefer-lowest)	1m 18s
Tests (8.3, ubuntu-latest, prefer-stable)	1m 34s
Tests (8.3, macos-latest, prefer-lowest)	2m 6s
Tests (8.3, macos-latest, prefer-stable)	2m 7s
Tests (8.3, windows-latest, prefer-lowest)	1m 42s
Tests (8.3, windows-latest, prefer-stable)	1m 36s
	29m 23s

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