tests

Add "@license" tag support #475

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	14s
Tests (8.1, ubuntu-latest, prefer-stable)	13s
Tests (8.1, macos-latest, prefer-lowest)	1m 29s
Tests (8.1, macos-latest, prefer-stable)	1m 19s
Tests (8.1, windows-latest, prefer-lowest)	35s
Tests (8.1, windows-latest, prefer-stable)	37s
Tests (8.2, ubuntu-latest, prefer-lowest)	14s
Tests (8.2, ubuntu-latest, prefer-stable)	13s
Tests (8.2, macos-latest, prefer-lowest)	1m 19s
Tests (8.2, macos-latest, prefer-stable)	1m 5s
Tests (8.2, windows-latest, prefer-lowest)	39s
Tests (8.2, windows-latest, prefer-stable)	39s
Tests (8.3, ubuntu-latest, prefer-lowest)	15s
Tests (8.3, ubuntu-latest, prefer-stable)	18s
Tests (8.3, macos-latest, prefer-lowest)	1m 46s
Tests (8.3, macos-latest, prefer-stable)	1m 31s
Tests (8.3, windows-latest, prefer-lowest)	41s
Tests (8.3, windows-latest, prefer-stable)	43s
Tests (8.4, ubuntu-latest, prefer-lowest)	12s
Tests (8.4, ubuntu-latest, prefer-stable)	14s
Tests (8.4, macos-latest, prefer-lowest)	1m 41s
Tests (8.4, macos-latest, prefer-stable)	1m 22s
Tests (8.4, windows-latest, prefer-lowest)	44s
Tests (8.4, windows-latest, prefer-stable)	37s
	18m 40s

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