tests

tests #445

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	15s
Tests (8.1, ubuntu-latest, prefer-stable)	22s
Tests (8.1, macos-latest, prefer-lowest)	1m 32s
Tests (8.1, macos-latest, prefer-stable)	1m 23s
Tests (8.1, windows-latest, prefer-lowest)	34s
Tests (8.1, windows-latest, prefer-stable)	36s
Tests (8.2, ubuntu-latest, prefer-lowest)	21s
Tests (8.2, ubuntu-latest, prefer-stable)	22s
Tests (8.2, macos-latest, prefer-lowest)	1m 20s
Tests (8.2, macos-latest, prefer-stable)	1m 26s
Tests (8.2, windows-latest, prefer-lowest)	39s
Tests (8.2, windows-latest, prefer-stable)	36s
Tests (8.3, ubuntu-latest, prefer-lowest)	21s
Tests (8.3, ubuntu-latest, prefer-stable)	32s
Tests (8.3, macos-latest, prefer-lowest)	1m 12s
Tests (8.3, macos-latest, prefer-stable)	1m 40s
Tests (8.3, windows-latest, prefer-lowest)	35s
Tests (8.3, windows-latest, prefer-stable)	36s
	14m 22s

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