tests

tests #511

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	16s
Tests (8.1, ubuntu-latest, prefer-stable)	22s
Tests (8.1, macos-latest, prefer-lowest)	1m 17s
Tests (8.1, macos-latest, prefer-stable)	1m 16s
Tests (8.1, windows-latest, prefer-lowest)	38s
Tests (8.1, windows-latest, prefer-stable)	41s
Tests (8.2, ubuntu-latest, prefer-lowest)	26s
Tests (8.2, ubuntu-latest, prefer-stable)	17s
Tests (8.2, macos-latest, prefer-lowest)	1m 14s
Tests (8.2, macos-latest, prefer-stable)	1m 23s
Tests (8.2, windows-latest, prefer-lowest)	46s
Tests (8.2, windows-latest, prefer-stable)	36s
Tests (8.3, ubuntu-latest, prefer-lowest)	26s
Tests (8.3, ubuntu-latest, prefer-stable)	23s
Tests (8.3, macos-latest, prefer-lowest)	1m 23s
Tests (8.3, macos-latest, prefer-stable)	1m 14s
Tests (8.3, windows-latest, prefer-lowest)	44s
Tests (8.3, windows-latest, prefer-stable)	33s
	13m 55s

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