Tests

Merge pull request #347 from SciML/at/julia-versions #250

Job	Run time
Tests (1, macos-latest) / Tests	3m 54s
Tests (1, ubuntu-latest) / Tests	9m 2s
Tests (1, windows-latest) / Tests	7m 45s
Tests (lts, macos-latest) / Tests	6m 8s
Tests (lts, ubuntu-latest) / Tests	7m 56s
Tests (lts, windows-latest) / Tests	9m 51s
Tests (pre, macos-latest) / Tests	6m 47s
Tests (pre, ubuntu-latest) / Tests	6m 50s
Tests (pre, windows-latest) / Tests	10m 41s
	1h 8m 54s

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