- Added the possibility to specify which language is used. The specified language is saved in the configuration.
- If a new/empty or older configuration is present without a specified language, the language is automatically determinated based on the system language. If the system language is supported by SoundSwitch this language is used. If not, English is used.
- The language is loaded once at startup. If it's changed later inside the settings form a restart of the application is required.
- Added German as third supported language.

Code relevant changes:
- New directory for all localization files /Localization.
- Moved all control localizations from the *.Designer.cs files to it's own methods outside of the *.Designer.cs files.
- Naming for all localizations is lowerCamelCase.
- While updating the localizations i also changed some English texts. As a result these strings are untranslated now in French.
- Tweaked some labels to support a different length - that's important if a string is in another language longer then in English.

Important:
- If ANY text inside the forms (designer) is changer or the other way around any English texts inside the *.resx files - they needed to be synchronized!

Other by-the-way changes:
- Minor code-style changes in various files which doesn't affect the functionality.
- Synchronized all file headers and updated copyright notices.

ToDo:
- Update Readme.md and include Zeta Resource Editor project file for further translations as well as a new - for example - wiki article how language changes should be done.
- Translate missing french strings.

- Added Customized Sound Notification note.
- Added Multi-Language Support section.
- Added a preview image.
- Minor changes.

Included Zeta Resource Editor project file for further translations.
Included ReSharper project settings - if someone else uses it.

ToDo:
- Create wiki article how language changes should be done.
- Translate missing french strings.