Call for testing: 1.13 release

[ogoffart]

We're preparing to release Slint 1.13, and the nightly builds are ready for testing.
Your feedback is key to catching bugs early and polishing the final release.

✨ Highlights in 1.13

• Local variables in slint with let
• New outline panel & menus in the live-preview and SlintPad
• Live-reload for Rust and C++: Binaries can be configured to auto-reload slint files as they change on disk to test changes right in your app faster
• More properties for Menu elements
• WGPU 26 support
• …and much more in the ChangeLog

👉 Try the master branch with your own projects and let us know if you spot any regressions, and share your feedback.
Let us know via GitHub Issues.