feat: support usage as Copy On Write for any lifetime #41

Job	Run time
doc	29s
build (stable, dev, ubuntu-latest)	29s
build (stable, dev, ubuntu-latest, --all-features)	29s
build (stable, dev, windows-latest)	3m 10s
build (stable, dev, windows-latest, --all-features)	3m 56s
build (stable, dev, macos-latest)	1m 5s
build (stable, dev, macos-latest, --all-features)	50s
build (stable, release, ubuntu-latest)	34s
build (stable, release, ubuntu-latest, --all-features)	35s
build (stable, release, windows-latest)	1m 33s
build (stable, release, windows-latest, --all-features)	1m 18s
build (stable, release, macos-latest)	51s
build (stable, release, macos-latest, --all-features)	55s
build (nightly, dev, ubuntu-latest)	25s
build (nightly, dev, ubuntu-latest, --all-features)	34s
build (nightly, dev, windows-latest)	5m 29s
build (nightly, dev, windows-latest, --all-features)	1m 7s
build (nightly, dev, macos-latest)	58s
build (nightly, dev, macos-latest, --all-features)	1m 20s
build (nightly, release, ubuntu-latest)	26s
build (nightly, release, ubuntu-latest, --all-features)	31s
build (nightly, release, windows-latest)	1m 2s
build (nightly, release, windows-latest, --all-features)	1m 15s
build (nightly, release, macos-latest)	3m 29s
build (nightly, release, macos-latest, --all-features)	1m 42s
fmt	9s
coverage	43s
minimal-versions	32s
msrv	2m 2s
	37m 58s

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