Added German localization
Merge pull request #120 from ccellar/PR/LocDE

German translation
Added Farsi support to NumberToWordsExtension
Added Farsi resource file for DateTime localization
refactored tests and updated release_notes
Removed redundant space
+ slovak localization (strings, formatter, tests)
Added Farsi localisation to NumberToWords and DateTime
* adhering to coding standards
* tests renamed
* more tests for Slovak localization
minor tidy up
Merge branch 'farsi'
removed all but CPL reference
Merge pull request #129 from MehdiK/removing-references

removed all but CPL reference
releasing v1.16.4
Merge pull request #124 from igorkulman/master

added Slovak localization (strings, formatter, tests)
* tests for Czech
* Czech tests reviewed and fixed
+ Czech datetime and timespan localization with passing tests