Tests

Tweak matricization overloads #599

Job	Run time
Tests (lts, ubuntu-latest) / Julia lts - ubuntu-latest	11m 20s
Tests (lts, windows-latest) / Julia lts - windows-latest	13m 17s
Tests (1, windows-latest) / Julia 1 - windows-latest	17m 24s
Tests (1, ubuntu-latest) / Julia 1 - ubuntu-latest	15m 53s
Tests (lts, macOS-latest) / Julia lts - macOS-latest	9m 44s
Tests (1, macOS-latest) / Julia 1 - macOS-latest	14m 7s
	1h 21m 45s

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