tests

tests #437

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	24s
Tests (8.1, ubuntu-latest, prefer-stable)	23s
Tests (8.1, macos-latest, prefer-lowest)	1m 16s
Tests (8.1, macos-latest, prefer-stable)	1m 20s
Tests (8.1, windows-latest, prefer-lowest)	42s
Tests (8.1, windows-latest, prefer-stable)	38s
Tests (8.2, ubuntu-latest, prefer-lowest)	20s
Tests (8.2, ubuntu-latest, prefer-stable)	20s
Tests (8.2, macos-latest, prefer-lowest)	1m 14s
Tests (8.2, macos-latest, prefer-stable)	1m 19s
Tests (8.2, windows-latest, prefer-lowest)	37s
Tests (8.2, windows-latest, prefer-stable)	38s
Tests (8.3, ubuntu-latest, prefer-lowest)	21s
Tests (8.3, ubuntu-latest, prefer-stable)	23s
Tests (8.3, macos-latest, prefer-lowest)	1m 25s
Tests (8.3, macos-latest, prefer-stable)	1m 35s
Tests (8.3, windows-latest, prefer-lowest)	43s
Tests (8.3, windows-latest, prefer-stable)	37s
	14m 15s

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