Version 0.5.0

Add more functionality for including custom language packages.

Only you have to install an package with "de_ZZ", "en_ZZ", "es_ZZ", "fr_ZZ" and so forth, and any entry in it will be considered before translation from the main package.

Also a language package with informal German is now available:

• https://github.com/MaWoScha/German_LocalePack_de_DE_DU
  using this new functionality.