Improvements:
Scale down large images before sending
Better error messages when trying to link a private Threema ID to a Threema Work app, or vice versa
Screen reader support: set proper alt text for confirmation images that are shown when adding a linked device
Improve app icons on Windows
Fixes:
Do not include image metadata when sending images
Fix text color when quoting image messages
Fix border around image in image viewer
…and a few other minor changes and improvements.
