Update unicode data

[nicolas-grekas]

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[nicolas-grekas]

@TRowbotham would you be up to give me some help on the IDN topic again?
The test suite we added in #267 makes maintaining the corresponding polyfill very hard because it's not possible to have the implementation in sync with the latest Unicode data.
Instead, I think we should have a limited set of data to test that works with all php/icu versions so that we can be reasonably confident about the polyfill without proving we're cutting edge data-wise.

[TRowbotham]

@TRowbotham would you be up to give me some help on the IDN topic again? The test suite we added in #267 makes maintaining the corresponding polyfill very hard because it's not possible to have the implementation in sync with the latest Unicode data. Instead, I think we should have a limited set of data to test that works with all php/icu versions so that we can be reasonably confident about the polyfill without proving we're cutting edge data-wise.

Using a small subset of test data makes sense given the challenges of the implementation and data may not be in sync. I can take a look over the weekend to see what subset might work for this

[nicolas-grekas]

It looks like not doing anything might be the best course of action - IDN tests pass at the moment :)

[stof]

Maybe we should have 2 sets of tests:

• a basic set of tests that can run on any php/icu versions
• the full tests running when the ICU version matches.

the CI would then force the version of ICU being used (similar to what the symfony/intl testsuite does)