Noteworthy changes in release 2.3.3 (2022-07-11) [stable]
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Upgrade IDNA Tables from Unicode 11 to 12.
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Upgrade TR46 Tables from Unicode 13 to 14.
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Updated gnulib files and various build fixes. Gnulib's Unicode code claims conformance to Unicode 14.0.0 rather than Unicode 9.0.0. A bug in Libidn2's build system was fixed that caused the system libunistring to be used even though the system version was too old.
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Self-check improvements. Self-checks for the idn2 command line tool were added. Closes: #96. The C self-checks in tests/ should now be usable outside of the libidn2 build environment, for system integration checks of a system-installed libidn2.