Test

Add `highest_out` to `create_constraints_indices` (#917) #352

Job	Run time
test (1, macOS-latest, x64, false) / Julia 1 - macOS-latest - x64 - push	14m 24s
test (1, ubuntu-latest, x64, false) / Julia 1 - ubuntu-latest - x64 - push	9m 23s
test (1, windows-latest, x64, false) / Julia 1 - windows-latest - x64 - push	10m 56s
test (lts, macOS-latest, x64, false) / Julia lts - macOS-latest - x64 - push	5m 27s
test (lts, ubuntu-latest, x64, false) / Julia lts - ubuntu-latest - x64 - push	5m 47s
test (lts, windows-latest, x64, false) / Julia lts - windows-latest - x64 - push	7m 5s
	53m 2s

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