Build and test

Create release notes markdown output for `diff` command #1804

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Run time

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Job	Run time
test (ubuntu-latest, 3.9)	36m 55s
lint (3.9)	24s
test (ubuntu-latest, 3.10)	39m 7s
lint (3.10)	25s
test (windows-latest, 3.10)	43m 54s
	2h 0m 45s