Allow Unicode-3.0 #680

Job	Run time
DevSkim	31s
cross-miri (aarch64-unknown-linux-gnu)	41s
audit	19s
cross-miri (i586-unknown-linux-gnu)	40s
clippy-pedantic (tzdb)	19s
clippy-pedantic (tzdb_data)	11s
cross-miri (powerpc-unknown-linux-gnu)	37s
doc	14s
feature-powerset	16s
cross-miri (powerpc64-unknown-linux-gnu)	35s
cross-miri (powerpc64le-unknown-linux-gnu)	35s
fmt	12s
lint (1.81)	17s
Miri	49s
lint (1.81, -Zminimal-versions)	17s
test	34s
lint (stable)	13s
typos	3s
lint (stable, -Zminimal-versions)	17s
lint (nightly)	20s
lint (nightly, -Zminimal-versions)	18s
	8m 18s

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