tests

tests #368

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	14s
Tests (8.1, ubuntu-latest, prefer-stable)	40s
Tests (8.1, macos-latest, prefer-lowest)	1m 32s
Tests (8.1, macos-latest, prefer-stable)	1m 17s
Tests (8.1, windows-latest, prefer-lowest)	35s
Tests (8.1, windows-latest, prefer-stable)	41s
Tests (8.2, ubuntu-latest, prefer-lowest)	15s
Tests (8.2, ubuntu-latest, prefer-stable)	13s
Tests (8.2, macos-latest, prefer-lowest)	1m 15s
Tests (8.2, macos-latest, prefer-stable)	1m 18s
Tests (8.2, windows-latest, prefer-lowest)	38s
Tests (8.2, windows-latest, prefer-stable)	46s
Tests (8.3, ubuntu-latest, prefer-lowest)	12s
Tests (8.3, ubuntu-latest, prefer-stable)	15s
Tests (8.3, macos-latest, prefer-lowest)	1m 27s
Tests (8.3, macos-latest, prefer-stable)	1m 23s
Tests (8.3, windows-latest, prefer-lowest)	35s
Tests (8.3, windows-latest, prefer-stable)	37s
	13m 53s

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