Tests

`permuteddims` (#4) #12

Job	Run time
Tests (lts, macOS-latest) / Julia lts - macOS-latest	55s
Tests (1, macOS-latest) / Julia 1 - macOS-latest	57s
Tests (1, ubuntu-latest) / Julia 1 - ubuntu-latest	58s
Tests (1, windows-latest) / Julia 1 - windows-latest	2m 46s
Tests (lts, ubuntu-latest) / Julia lts - ubuntu-latest	47s
Tests (lts, windows-latest) / Julia lts - windows-latest	1m 18s
	7m 41s

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