lib: release `0.4.0` #415

Job	Run time
sync	50s
build (ubuntu-latest, 1.63.0)	3m 35s
build (ubuntu-latest, stable)	1m 56s
build (ubuntu-latest, beta)	1m 59s
build (ubuntu-latest, nightly)	1m 49s
build (macos-latest, 1.63.0)	3m 31s
build (macos-latest, stable)	1m 36s
build (macos-latest, beta)	1m 29s
build (macos-latest, nightly)	1m 56s
build (windows-latest, 1.63.0)	5m 10s
build (windows-latest, stable)	2m 50s
build (windows-latest, beta)	3m 1s
build (windows-latest, nightly)	2m 38s
	32m 20s

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