Allow 310 as a mcc value for Puerto Rico, closes #10.
Fix typo in mcc for Yemen, closes #9.
Review country to mcc mapping and fix a number of them.

Also added consistency test between country and operator mappings.
Merge pull request #11 from hannosch/10-puerto-rico-mcc-310

Allow 310 as a mcc value for Puerto Rico, closes #10.
Merge branch 'hannosch-review-mcc-values'
Split out changelog to a separate file, it's getting too long.
Add release dates to changelog.
Declare support for Python 3.4 and test it on travis-ci.