tests

tests #329

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	16s
Tests (8.1, ubuntu-latest, prefer-stable)	23s
Tests (8.1, macos-latest, prefer-lowest)	1m 12s
Tests (8.1, macos-latest, prefer-stable)	1m 8s
Tests (8.1, windows-latest, prefer-lowest)	39s
Tests (8.1, windows-latest, prefer-stable)	38s
Tests (8.2, ubuntu-latest, prefer-lowest)	15s
Tests (8.2, ubuntu-latest, prefer-stable)	20s
Tests (8.2, macos-latest, prefer-lowest)	1m 12s
Tests (8.2, macos-latest, prefer-stable)	1m 9s
Tests (8.2, windows-latest, prefer-lowest)	1m 10s
Tests (8.2, windows-latest, prefer-stable)	44s
Tests (8.3, ubuntu-latest, prefer-lowest)	13s
Tests (8.3, ubuntu-latest, prefer-stable)	12s
Tests (8.3, macos-latest, prefer-lowest)	1m 34s
Tests (8.3, macos-latest, prefer-stable)	1m 12s
Tests (8.3, windows-latest, prefer-lowest)	48s
Tests (8.3, windows-latest, prefer-stable)	46s
	13m 51s

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