Commonality 1.0 #1295

Job	Run time
test	1m 13s
integration-test (17.x, ubuntu-latest)	1m 19s
type-check	1m 18s
integration-test (17.x, macos-latest)	1m 24s
integration-test (17.x, windows-latest)	1m 21s
lint	1m 7s
integration-test (18.x, ubuntu-latest)	1m 4s
integration-test (18.x, macos-latest)	1m 19s
integration-test (18.x, windows-latest)	1m 5s
integration-test (20.x, ubuntu-latest)	1m 6s
integration-test (20.x, macos-latest)	3m 16s
integration-test (20.x, windows-latest)	1m 5s
	16m 37s

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