- Update to upstream version 1.2.1
* Shipping a fix for a stupid release bug

- Update to upstream version 1.2
* Manual: Updated text and dutch translations
* Manual: Updated screenshots for all languages
* Fix #211: Be more robust if no .git file is there
* Fix cmake warnings
* Substancial code cleanups
* Fix reproducable builds
* Fix saving of XRechnung files
* Added a template for XRechnung version 3.0.1
* Fix #218: Add a image mask for reportlab
* Fix tests
* Add checkbox to mark document types to get XRechnung support
* Add a feedback link to the system overview page