2.3.0
Add tests/IdnaTest.*
Fix: Enable test-glibc only on host_os 'linux-gnu' (Fixes #72)
gen-utc-test.pl: skip lines which would have generated empty tests
valgrind: use suppressions file by default
Add test-glibc, based on API traces from the glibc AI_IDN tests
Add test for round-trip failure
Turn _idn2_punycode_encode, _idn2_punycode_decode into compat symbols
Fix label length check for idn2_register_u8()
Add compiler-suggested function attributes
Stricter check of punycode-decode input