Bump to 0.4.0-preview.1 for releasing breaking changes #790

Job	Run time
build (ubuntu-latest, Release)	4m 30s
build (ubuntu-latest, Debug)	6m 30s
build (windows-latest, Debug)	6m 2s
build (macos-latest, Debug)	2m 26s
build (windows-latest, Release)	5m 38s
build (macos-latest, Release)	3m 25s
publish-coverage	0s
	28m 31s

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