Add `Bytes::from_owner` (#742) #760

Job	Run time
minrust	1m 40s
loom	18s
cross (i686-unknown-linux-gnu)	32s
miri	12m 10s
cross (armv7-unknown-linux-gnueabihf)	34s
nightly	59s
cross (powerpc-unknown-linux-gnu)	38s
rustfmt	11s
cross (powerpc64-unknown-linux-gnu)	30s
stable (ubuntu-latest)	1m 30s
cross (wasm32-unknown-unknown)	13s
stable (macos-latest)	1m 8s
tsan	1m 17s
stable (windows-latest)	2m 55s
Publish Documentation	14s
	24m 49s

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