Pangram: Add the non-ascii test cases

[cogitor]

These are the canonical data changes for additional pangram tests I originally wanted to add to the xscala repo (exercism/scala#348)

The first non-ascii test already exists in the xscala repo (so this would only sync it up to common), while I wanted to add the second one as well:

I feel that another useful test would be a string with non-ascii characters, but with a missing character 'x'. This would invalidate solutions that are written to simply pass the previous test (e.g. by making the test for distinct characters be >= 26)

I am not sure if this would make sense for all languages, and what steps would be required to generate the per-language test cases.

Cheers!

[stevejb71]

Non ascii test cases were removed earlier. See
#441

[cogitor]

Figured that could've been the case and the scala tests weren't updated. That's fine, I can close this PR - how do you re-generate tests from the canonical file?

[stevejb71]

Looking at the xscala repo, @ricemery has a test generator. If there is an automatic way of generating the tests he might well know, otherwise it would be done by hand.

[ricemery]

The tests have to be updated manually. I have submitted a pull request - exercism/scala#350 . Hopefully is compiles, runs and is merged :)

Thanks

[cogitor]

@ricemery awesome! I'm closing this one then, cheers