Multi-threading attempt III #493

Job	Run time
Julia 1 - ubuntu-latest -	49s
Julia 1 - macOS-latest -	1m 1s
Julia 1 - windows-latest -	1m 47s
Julia lts - ubuntu-latest -	51s
Julia lts - macOS-latest -	44s
Julia lts - windows-latest -	2m 11s
Julia nightly - ${{ matrix.os }} - ${{ matrix.arch }}	0s
	7m 23s

Provide feedback