Update the readme and fix a sporadic test failure on Mac #185

Job	Run time
get_version	4s
build-and-run-tests-macos (macos-13)	37m 46s
build-and-run-tests-ubuntu	34m 19s
build-and-run-tests-macos (macos-14)	37m 37s
build-and-run-tests-windows	1h 0m 4s
	2h 49m 50s

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