Bump version to v0.1.6 #1065

Job	Run time
sdist	4m 49s
macos-x86_64	8m 40s
macos-universal	24m 16s
windows (x86_64-pc-windows-msvc, x64)	9m 14s
linux (x86_64-unknown-linux-gnu)	5m 32s
windows (i686-pc-windows-msvc, x86)	9m 6s
linux (i686-unknown-linux-gnu)	7m 40s
windows (aarch64-pc-windows-msvc, x64)	10m 25s
linux-cross (aarch64-unknown-linux-gnu, aarch64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	8m 3s
linux-cross (armv7-unknown-linux-gnueabihf, armv7)	7m 40s
musllinux (x86_64-unknown-linux-musl)	5m 41s
linux-cross (s390x-unknown-linux-gnu, s390x)	8m 42s
musllinux (i686-unknown-linux-musl)	5m 13s
linux-cross (powerpc64le-unknown-linux-gnu, ppc64le)	7m 58s
Validate tag	0s
musllinux-cross (aarch64-unknown-linux-musl, aarch64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	6m 13s
linux-cross (powerpc64-unknown-linux-gnu, ppc64)	5m 52s
musllinux-cross (armv7-unknown-linux-musleabihf, armv7)	5m 34s
Upload to PyPI	0s
Tag release	0s
Publish to GitHub	0s
Update dependents	0s
	2h 20m 38s

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