Dtool-lookup-gui

---------------

- About dialog with version info
- Offer multi-line search query editor via drp-down button instead of double click
- Button 'Show' opens file system browser in frozen executables as well
- Display correct number of copied items
- Added missing gir1.2-gtksource-4 system package dependency to Ubuntu build workflow
- Preserve executable bits in release archives
- Don't fail listing proto datasets without README.yml via dtool-s3 (or any other storage broker)

---------------

- Added refresh button
- Handle non-ASCII characters in S3 metadata by using dtool-s3 development version

---------------

- Packaged binary for MacOS >= 10.15
- Build system description bundled with binaries
- Moved repository from https://github.com/IMTEK-Simulation/dtool-lookup-gui to https://github.com/livMatS/dtool-lookup-gui

---------------

- README.yml template file chooser in settings dialog
- User name and eMail configurable in settings dialog

----------------

- Config reset/import/export buttons in settings dialog

---------------

- Usable and stable on Windows 10 and Ubuntu 20.04
- Published as PyInstaller-bundled one-file exectuable on GitHub releases
- Download of single items by double-click on manifest entry