tests

tests #440

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	25s
Tests (8.1, ubuntu-latest, prefer-stable)	17s
Tests (8.1, macos-latest, prefer-lowest)	1m 28s
Tests (8.1, macos-latest, prefer-stable)	1m 19s
Tests (8.1, windows-latest, prefer-lowest)	39s
Tests (8.1, windows-latest, prefer-stable)	36s
Tests (8.2, ubuntu-latest, prefer-lowest)	17s
Tests (8.2, ubuntu-latest, prefer-stable)	16s
Tests (8.2, macos-latest, prefer-lowest)	1m 10s
Tests (8.2, macos-latest, prefer-stable)	1m 12s
Tests (8.2, windows-latest, prefer-lowest)	36s
Tests (8.2, windows-latest, prefer-stable)	37s
Tests (8.3, ubuntu-latest, prefer-lowest)	20s
Tests (8.3, ubuntu-latest, prefer-stable)	16s
Tests (8.3, macos-latest, prefer-lowest)	1m 14s
Tests (8.3, macos-latest, prefer-stable)	1m 21s
Tests (8.3, windows-latest, prefer-lowest)	40s
Tests (8.3, windows-latest, prefer-stable)	40s
	13m 23s

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