Bump version to 0.5.0 #566

Job	Run time
macos-x86_64	17m 2s
macos-aarch64	12m 24s
sdist	8m 50s
linux (x86_64-unknown-linux-gnu)	9m 17s
windows (x86_64-pc-windows-msvc, x64)	16m 55s
linux (i686-unknown-linux-gnu)	16m 2s
linux-arm (aarch64-unknown-linux-gnu, aarch64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	10m 17s
windows (i686-pc-windows-msvc, x86)	18m 26s
linux-arm (armv7-unknown-linux-gnueabihf, armv7)	9m 35s
linux-arm (arm-unknown-linux-musleabihf, arm)	9m 25s
linux-powerpc (powerpc64le-unknown-linux-gnu, ppc64le, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	9m 47s
linux-s390x (s390x-unknown-linux-gnu, s390x)	14m 41s
musllinux (x86_64-unknown-linux-musl)	9m 47s
linux-powerpc (powerpc64-unknown-linux-gnu, ppc64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	9m 30s
musllinux (i686-unknown-linux-musl)	8m 58s
musllinux-cross (aarch64-unknown-linux-musl, aarch64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	10m 17s
musllinux-cross (armv7-unknown-linux-musleabihf, armv7)	9m 47s
musllinux-cross (powerpc64le-unknown-linux-musl, ppc64le, -e JEMALLOC_SYS_WITH_LG_PAGE=16, nightly)	7m 48s
	3h 28m 48s

Provide feedback