Version 0.5.10 -- 2019/05/12

* Add Kannada language localization (#243)
* Revert some copyrights changed by mistake (#254)
* Add indian rupee to the supported currencies (#248)
* Improve currency functions for German and French (#247)
* Improve Slovene localization (#246)
* Improve Spanish localization (#240)
* Fix typo 'seperator' on source code (#238)
* Convert string to decimal values (#223)
* Improve German localization and test coverage (#237)
* Improve Polish localization (#233)
* Fix ordinal number for French ending on 1 (#236)
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