Tests

Refactor algorithm selection logic #107

Job	Run time
Tests (1, windows-latest) / Julia 1 - windows-latest	39s
Tests (lts, windows-latest) / Julia lts - windows-latest	49s
Tests (lts, ubuntu-latest) / Julia lts - ubuntu-latest	1m 0s
Tests (lts, macOS-latest) / Julia lts - macOS-latest	58s
Tests (1, ubuntu-latest) / Julia 1 - ubuntu-latest	1m 2s
Tests (1, macOS-latest) / Julia 1 - macOS-latest	1m 2s
	5m 30s

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