Made with love... and python

Today's valentine day special... A new NPBackup v3 release candidate.
This one has been long in the making.

I'd like to thank @GuitarBilly for his really good issues / bug tracking, which highly improves the quality of this RC release.

Features

• Upgrade server/client now can filter and provide different binaries / upgrade scripts for specific machines / groups
• Upgrade rollback has been improved on Windows
• Upgrade client can identify if the initial scheduled program launch needs to run
• Upgrade server now has a basic multi-user and permission system
• Upgrade client now tests if new binaries can properly read current config file
• GUI:
  • Minor UX improvements
  • GUI can now remove a manager password
  • Improve upgrade process messages
  • Add new config file santizer check
• New restore_only permission

Fixes

• Upgrade client now retains config file if it was in the same directory as the binaries
• Rollback behavior is more resilient under Windows
• GUI:
  • Don't polluate logs with snapshot content
  • GUI now accepts multiple --run-as-cli arguments when it's relaunched with prior arguments
  • Adding multiple files at once to backup paths now expand to list
  • Don't try to kill current process when exiting, only backup backend
  • Fix deletion of just created objects
  • Fix permissions & manager password reset when saving configuration twice
• Fix files-from source not recognized
• Windows x86 legacy builds now include the adequate older backend binary

Misc

• Unlocking actions is now permitted for all permissions
• Reword some metrics in Grafana dashboard
• Added variable and user expansion for additional_parameters and additional_backup_only_parameters
• Added a new environment variable with path to current backend binary for script usage
• Newer windows builds now run with Python 3.13
• Switched to Nuitka commercial v2.6.4 compiler