tests

tests #424

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	34s
Tests (8.1, ubuntu-latest, prefer-stable)	24s
Tests (8.1, macos-latest, prefer-lowest)	1m 22s
Tests (8.1, macos-latest, prefer-stable)	1m 17s
Tests (8.1, windows-latest, prefer-lowest)	29s
Tests (8.1, windows-latest, prefer-stable)	30s
Tests (8.2, ubuntu-latest, prefer-lowest)	19s
Tests (8.2, ubuntu-latest, prefer-stable)	15s
Tests (8.2, macos-latest, prefer-lowest)	1m 31s
Tests (8.2, macos-latest, prefer-stable)	1m 14s
Tests (8.2, windows-latest, prefer-lowest)	33s
Tests (8.2, windows-latest, prefer-stable)	46s
Tests (8.3, ubuntu-latest, prefer-lowest)	15s
Tests (8.3, ubuntu-latest, prefer-stable)	14s
Tests (8.3, macos-latest, prefer-lowest)	1m 19s
Tests (8.3, macos-latest, prefer-stable)	1m 30s
Tests (8.3, windows-latest, prefer-lowest)	36s
Tests (8.3, windows-latest, prefer-stable)	33s
	13m 41s

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