New features

• Improved error messages returned when validation fails.
• New field added for LineUnitKindReference.
• Optionally include references in error responses when there are validation errors.
• JSON for shipments saved in Autoprint box in response to Importupload is now included even if error label printing on auto print failure has been turned off.
  
  

Improvements and fixes

• Upgraded to .NET 6, changing major version from 16 to 17.
• Performance and stability improvements.
• Various technical fixes and refactoring.