Don't double-indent multiline expressions in binary operations (#462) #56

Job	Run time
source-release	3m 18s
bump-tag	15s
build (ubuntu-20.04, native)	8m 47s
build (macos-latest, native)	19m 3s
build (ubuntu-20.04, aarch64-unknown-linux-gnu)	9m 58s
release	15s
	41m 36s

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