Bump version to 0.5.8 #609

Job	Run time
sdist	17s
macos-x86_64	56s
macos-aarch64	19s
windows (x86_64-pc-windows-msvc, x64)	23s
windows (i686-pc-windows-msvc, x86)	26s
linux-arm (aarch64-unknown-linux-gnu, aarch64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	45s
linux-powerpc (powerpc64le-unknown-linux-gnu, ppc64le, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	1m 15s
linux-arm (armv7-unknown-linux-gnueabihf, armv7)	42s
linux-powerpc (powerpc64-unknown-linux-gnu, ppc64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	1m 19s
linux-s390x (s390x-unknown-linux-gnu, s390x)	50s
linux-arm (arm-unknown-linux-musleabihf, arm)	41s
linux (x86_64-unknown-linux-gnu)	59s
musllinux (x86_64-unknown-linux-musl)	48s
linux (i686-unknown-linux-gnu)	58s
musllinux-cross (aarch64-unknown-linux-musl, aarch64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	45s
musllinux (i686-unknown-linux-musl)	50s
musllinux-cross (armv7-unknown-linux-musleabihf, armv7)	1m 0s
musllinux-cross (powerpc64le-unknown-linux-musl, ppc64le, -e JEMALLOC_SYS_WITH_LG_PAGE=16, nightly)	33s
	13m 46s

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