tests

tests #388

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	18s
Tests (8.1, ubuntu-latest, prefer-stable)	18s
Tests (8.1, macos-latest, prefer-lowest)	1m 22s
Tests (8.1, macos-latest, prefer-stable)	1m 14s
Tests (8.1, windows-latest, prefer-lowest)	37s
Tests (8.1, windows-latest, prefer-stable)	37s
Tests (8.2, ubuntu-latest, prefer-lowest)	13s
Tests (8.2, ubuntu-latest, prefer-stable)	13s
Tests (8.2, macos-latest, prefer-lowest)	1m 13s
Tests (8.2, macos-latest, prefer-stable)	1m 10s
Tests (8.2, windows-latest, prefer-lowest)	44s
Tests (8.2, windows-latest, prefer-stable)	39s
Tests (8.3, ubuntu-latest, prefer-lowest)	12s
Tests (8.3, ubuntu-latest, prefer-stable)	15s
Tests (8.3, macos-latest, prefer-lowest)	1m 25s
Tests (8.3, macos-latest, prefer-stable)	1m 14s
Tests (8.3, windows-latest, prefer-lowest)	34s
Tests (8.3, windows-latest, prefer-stable)	33s
	12m 51s

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