Get minimal covering nodes #446

Job	Run time
Test against different Python versions (3.8, ubuntu-latest)	17s
Test against different Python versions (3.8, windows-latest)	56s
Test against different Python versions (3.8, macos-latest)	31s
Test against different Python versions (3.9, ubuntu-latest)	18s
Test against different Python versions (3.9, windows-latest)	46s
Test against different Python versions (3.9, macos-latest)	23s
Test against different Python versions (3.10, ubuntu-latest)	15s
Test against different Python versions (3.10, windows-latest)	51s
Test against different Python versions (3.10, macos-latest)	27s
Test against different Python versions (3.11, ubuntu-latest)	16s
Test against different Python versions (3.11, windows-latest)	42s
Test against different Python versions (3.11, macos-latest)	35s
Test against different Python versions (3.12, ubuntu-latest)	7m 30s
Test against different Python versions (3.12, windows-latest)	4m 52s
Test against different Python versions (3.12, macos-latest)	4m 26s
	23m 5s

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