tests

tests #369

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	20s
Tests (8.1, ubuntu-latest, prefer-stable)	14s
Tests (8.1, macos-latest, prefer-lowest)	1m 18s
Tests (8.1, macos-latest, prefer-stable)	1m 25s
Tests (8.1, windows-latest, prefer-lowest)	47s
Tests (8.1, windows-latest, prefer-stable)	48s
Tests (8.2, ubuntu-latest, prefer-lowest)	19s
Tests (8.2, ubuntu-latest, prefer-stable)	14s
Tests (8.2, macos-latest, prefer-lowest)	1m 15s
Tests (8.2, macos-latest, prefer-stable)	1m 15s
Tests (8.2, windows-latest, prefer-lowest)	40s
Tests (8.2, windows-latest, prefer-stable)	45s
Tests (8.3, ubuntu-latest, prefer-lowest)	19s
Tests (8.3, ubuntu-latest, prefer-stable)	15s
Tests (8.3, macos-latest, prefer-lowest)	1m 15s
Tests (8.3, macos-latest, prefer-stable)	1m 18s
Tests (8.3, windows-latest, prefer-lowest)	47s
Tests (8.3, windows-latest, prefer-stable)	41s
	13m 55s

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