tests

tests #402

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	16s
Tests (8.1, ubuntu-latest, prefer-stable)	20s
Tests (8.1, macos-latest, prefer-lowest)	1m 21s
Tests (8.1, macos-latest, prefer-stable)	1m 9s
Tests (8.1, windows-latest, prefer-lowest)	36s
Tests (8.1, windows-latest, prefer-stable)	30s
Tests (8.2, ubuntu-latest, prefer-lowest)	14s
Tests (8.2, ubuntu-latest, prefer-stable)	23s
Tests (8.2, macos-latest, prefer-lowest)	1m 13s
Tests (8.2, macos-latest, prefer-stable)	1m 15s
Tests (8.2, windows-latest, prefer-lowest)	34s
Tests (8.2, windows-latest, prefer-stable)	32s
Tests (8.3, ubuntu-latest, prefer-lowest)	14s
Tests (8.3, ubuntu-latest, prefer-stable)	19s
Tests (8.3, macos-latest, prefer-lowest)	1m 20s
Tests (8.3, macos-latest, prefer-stable)	1m 14s
Tests (8.3, windows-latest, prefer-lowest)	34s
Tests (8.3, windows-latest, prefer-stable)	35s
	12m 39s

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