4.4.0

Only standalone builds are provided now, given no reports of trouble. This will also ease deployment following the .NET 5.0 migration.

- DesignLibs fixes for resizing of box and text entities.
- DesignLibs workaround for not-yet-understood fail to register layer/datatype.
- Keyholer bug fix.
- Bug fix for ray extension reading.
- Various small fixes and upstream enhancements.
- UI clean-up using groupboxes to make control behavior easier to comprehend at a glance.
- Allow axis color to be changed.
- Allow viewport background color to be changed.
- External file generation control via filtering of result conditions.
 - Allows for 'fail' cases only to be exported based on user criteria.