ADD: center tap equivalence (#447) #609

Job	Run time
Julia 1.6 - ubuntu-latest - x64 - push	15m 51s
Julia 1.6 - macOS-latest - x64 - push	18m 29s
Julia 1.6 - windows-latest - x64 - push	27m 59s
Julia 1 - ubuntu-latest - x64 - push	14m 39s
Julia 1 - macOS-latest - x64 - push	15m 56s
Julia 1 - windows-latest - x64 - push	16m 8s
Julia nightly - ubuntu-latest - x64 - push	17m 49s
Julia nightly - macOS-latest - x64 - push	16m 50s
Julia nightly - windows-latest - x64 - push	15m 12s
	2h 38m 53s

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