pangram: missing edge case

[kytrinyx]

@helenst came across a solution that had a bug that the test suite didn't catch. It's addressed in exercism/python#331

The solution worked by accident because 'the quick...' happens to be alphabetically greater than 'abcdef...'.

Here's the test case that was added:

def test_invalid_pangram(self):
    self.assertFalse(
        is_pangram('the quick brown fish jumps over the lazy dog'))

We need to:

• update the canonical data - https://github.com/exercism/x-common/blob/master/pangram.json
• draft a detailed issue
  • describes the problem that was found
  • describes the fix
  • links to the canonical data (and mentions that it has been updated with the new test cases)
  • suggests that the exercise should be fixed to include these test cases
  • links to this specific issue (so we get a visual todo list)
• submit the issue to the relevant tracks using blazon

[kytrinyx]

I'm reopening this, since we haven't put together the issue text to be blasted across all the relevant repositories with blazon.

[IanWhitney]

Yay for Blazon.

[kotp]

#284 hopefully helps clarifies this.

[behrtam]

All tracks have incorporated the change, even the java track have merged the change they just didn't close the issue. So we could close this here, right?