Add IntoHandle impl to changelog #421

Job	Run time
cargo-deny (advisories)	17s
cargo-deny (bans licenses sources)	14s
lint	18s
aarch64-apple-darwin / build	18s
aarch64-apple-darwin-nightly / build	23s
aarch64-apple-ios / build	26s
aarch64-unknown-linux-gnu / build	24s
aarch64-unknown-linux-musl / build	54s
arm-linux-androideabi / build	37s
i686-pc-windows-gnu / build	52s
armv7-linux-androideabi / build	33s
i686-pc-windows-msvc / build	3m 12s
i686-unknown-linux-gnu / build	30s
i686-unknown-linux-musl / build	58s
msrv-aarch64-apple-darwin / build	32s
msrv-arm-linux-androideabi / build	33s
msrv-x86_64-unknown-freebsd / build	38s
msrv-x86_64-pc-windows-msvc / build	38s
msrv-x86_64-unknown-linux-gnu / build	37s
msrv-x86_64-unknown-linux-musl / build	37s
msrv-x86_64-unknown-netbsd / build	41s
x86_64-apple-darwin / build	32s
x86_64-pc-windows-gnu / build	2m 20s
x86_64-pc-windows-msvc / build	2m 15s
x86_64-pc-windows-msvc-nightly / build	1m 19s
x86_64-unknown-freebsd / build	26s
x86_64-unknown-linux-gnu / build	43s
x86_64-unknown-linux-gnu-nightly / build	42s
x86_64-unknown-linux-musl / build	1m 3s
x86_64-unknown-netbsd / build	27s
	23m 59s

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