v2.3.3
Update IdnaTest.txt from Unicode 6.3.0 to 10.0.0.
tests-idn2.sh: Add self-test of idn2 CLI. Closes: #96.
Update copyright years.
Indent code.
Let test-locale.c fail gracefully for missing iconv.
Make (some) self-tests usable standalone using system libidn2. Closes: #97.
Make test-punycode actually fail on error. Closes: #87.