Merge pull request #38 from lararennie/master

RegionDataConstants updates.
fix potential issue with hash reordering in RegionDataConstantsTest
Merge pull request #39 from dlyongemallo/master

Fix potential issue with hash reordering in RegionDataConstantsTest
Update language for CN to zh instead of zh-Hans
Merge pull request #40 from roes/update_cn_language

Update language for CN to zh instead of zh-Hans