Release 0.60.0 (googleapis#3623)

release 0.59.0 (googleapis#3598)

Release 0.58.0 and 1.40.0 (googleapis#3565)

generate-api: print component versions (googleapis#3552)

Release 0.56.0 (googleapis#3521)

Release 0.55.1 (googleapis#3489)

Release 0.55.0 (googleapis#3485)

Release 0.54.0 (googleapis#3457)

Release 0.53.0 (googleapis#3399)

Release 0.52.0 (googleapis#3376)