release v1.15.4 #116

Job	Run time
build-unix (macos-latest, x86_64-apple-darwin)	10m 11s
build-unix (macos-latest, aarch64-apple-darwin)	8m 58s
build-cross (i686-unknown-linux-musl)	7m 15s
build-cross (x86_64-pc-windows-gnu)	7m 58s
build-cross (x86_64-unknown-linux-gnu)	6m 17s
build-cross (x86_64-unknown-linux-musl)	8m 9s
build-cross (armv7-unknown-linux-musleabihf)	7m 33s
build-cross (armv7-unknown-linux-gnueabihf)	7m 30s
build-cross (arm-unknown-linux-gnueabi)	6m 20s
build-cross (arm-unknown-linux-gnueabihf)	7m 14s
build-cross (arm-unknown-linux-musleabi)	6m 36s
build-cross (arm-unknown-linux-musleabihf)	8m 3s
build-cross (aarch64-unknown-linux-gnu)	6m 33s
build-cross (aarch64-unknown-linux-musl)	6m 56s
build-cross (mips-unknown-linux-musl)	6m 28s
build-cross (mips-unknown-linux-gnu)	6m 26s
build-cross (mipsel-unknown-linux-musl)	7m 23s
build-windows	8m 49s
	2h 14m 39s

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