Properly handle unicode data.

[mpena2099]

Same kind of error as grantmcconnaughey#3

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[coveralls]

Coverage decreased (-0.1%) to 93.006% when pulling a943eff on mpena2099:master into f14e75c on chartit:master.

[atodorov]

@mpena2099 thanks for the PR. Please see commit 8dac0f7. You need to add the same version handling.

Also can you add a new test which demonstrates the bug & verifies the fix? Thanks!

[mpena2099]

OK @atodorov, I'll try again soon.

Thanks,
Mauricio de O. Pena

[coveralls]

Coverage decreased (-0.03%) to 93.103% when pulling 4a73016 on mpena2099:master into f14e75c on chartit:master.

[mpena2099]

@atodorov, still some check errors...

[atodorov]

@mpena2099 sorry to bitch about it but you will have to add a few more bits to this PR before I can merge it:

• Update changelog in README
• Add a new test (or document which existing test covers your patch)
• Squash all commits together

Please see commit 8dac0f7 for reference. There you will also find some unicode data, which is used during testing. Feel free to add more data if the existing one doesn't fit the charts you want to create.
NOTE: views in demoproject/ are also used for testing.

EDIT: don't worry about the failing TravisCI jobs, there are lots of pylint errors currently but please make sure code you touch doesn't introduce more pylint errors.