Fix pypi classifiers about langid.py

[saffsd]

Thanks for volunteering to help!

I think Production/Stable is fine for this project.

The license is not meant to be custom, it is meant to be BSD 2-Clause. Please let me know if that's not set up right.

With respect to Topic, would

Topic :: Text Processing :: Linguistic

Also apply? I'm not familiar with how these identifiers are used.

[pquentin]

Sure, the topic also seems to apply.

Sorry for the license, I chose 'BSD' as was done in the arguments to setup(), since there's no way to choose between 2-clause and 3-clause.

[pquentin]

@saffsd any progress on this?

[saffsd]

Sorry for the delay, it fell off my radar. Going to try and sort #35 now.

[pquentin]

Thank you @saffsd!