Bump version and add release date to `Changes.md` #475

Job	Run time
Alpine Linux	2m 33s
FreeBSD-x86_64 with rust stable	48s
Linux-x86_64 with rust stable	1m 51s
Linux-x86_64 (rustls-native-roots) with rust stable	1m 26s
Linux-x86_64 (native-tls) with rust stable	1m 18s
Linux-x86_64 (native-tls-vendored) with rust stable	1m 18s
Linux-aarch64 with rust stable	1m 11s
Linux-arm with rust stable	1m 9s
Linux-i686 with rust stable	51s
Linux-powerpc with rust stable	48s
Linux-powerpc64 with rust stable	46s
Linux-powerpc64le with rust stable	50s
Linux-riscv64 with rust stable	1m 2s
Linux-s390x with rust stable	46s
NetBSD-x86_64 with rust stable	2m 0s
Windows-aarch64 with rust stable	3m 28s
Windows-i686 with rust stable	3m 11s
Windows-x86_64 with rust stable	3m 33s
macOS-x86_64 with rust stable	1m 42s
macOS-aarch64 with rust stable	1m 16s
Linux-x86_64 with rust beta	1m 12s
Linux-x86_64 with rust nightly	1m 34s
	34m 33s

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