Commonality 1.0 #1301

Job	Run time
lint	1m 47s
integration-test (17.x, ubuntu-latest)	1m 28s
integration-test (17.x, macos-latest)	1m 49s
test	2m 27s
integration-test (17.x, windows-latest)	1m 44s
type-check	1m 26s
integration-test (18.x, ubuntu-latest)	3m 18s
integration-test (18.x, macos-latest)	1m 38s
integration-test (18.x, windows-latest)	1m 43s
integration-test (20.x, ubuntu-latest)	1m 47s
integration-test (20.x, macos-latest)	1m 44s
integration-test (20.x, windows-latest)	3m 24s
	24m 15s

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