Bump to 1.7.1 (#2191) #259

Job	Run time
Build aarch64-unknown-linux-musl	3m 18s
Build x86_64-unknown-linux-musl	4m 14s
Build armv7-unknown-linux-musleabihf	4m 8s
Build x86_64-apple-darwin	7m 14s
Build i686-unknown-linux-musl	3m 52s
Build x86_64-pc-windows-msvc	7m 57s
Build arm-unknown-linux-musleabihf	3m 21s
Build i686-pc-windows-msvc	8m 40s
Build aarch64-pc-windows-msvc	26m 11s
Build powerpc64le-unknown-linux-musl	5m 10s
Build s390x-unknown-linux-gnu	4m 33s
Release crates.io	1m 23s
Publish to GitHub releases	41s
Publish to PyPI	1m 18s
	1h 22m 0s

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