Freon 2.0 is here — and it’s our biggest release yet!
This version brings a completely redesigned Scoper, a modernized web app interface, and a host of improvements that make developing DSLs smoother, faster, and more fun.

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✨ A Completely Rewritten Scoper

The Scoper — responsible for name resolution and namespaces — has been rebuilt from the ground up.
It’s now faster, more reliable, and easier to extend.
You’ll also find new validation for unique names within namespaces.

🎨 A Fresh Web App Based on Flowbite

The old SMUI interface has been replaced by a new Flowbite-powered web app.
Expect a cleaner look, smoother interactions, and full compatibility with the latest version of Svelte 5.

🔤 More Freedom in Naming

Model unit names are no longer limited to a narrow set of characters.
Almost any character is now allowed — giving you maximum flexibility in naming your language elements.

🔗 Smarter References

When you rename a node, all its references update automatically.
No more manual cleanup — everything stays consistent.

🧩 Fully Stylable Components

Every part of the editor is now controllable through CSS.
You can customize the appearance of concepts, fragments, and placeholders for a look that fits your project perfectly.

🔍 Smarter Dropdowns

Dropdown menus now react to typed input in a case-insensitive way — no more missed matches because of capitalization.

📝 Multi-Line Textboxes

At last, you can create multi-line text components directly in the editor.

🧾 Cleaner Syntax

Definition files have been aligned and simplified for a more consistent syntax across all generators.

🧱 Clearer External Components

External components are no longer experimental and are now a fully supported part of the editor framework, allowing you to embed custom Svelte components in your projections with confidence. All boxes previously called External… have been renamed to …ReplacerBox for clarity.

⚙️ Improved Handling of Optional Primitives

Optional primitive properties now behave more intuitively across the parser, serializer, and UI.

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Freon 2.0 ships with the latest versions of its underlying technologies:

• Svelte 5 for modern component behavior
• AGL 4.2.1-20-RC2 for improved parser generation
• Updated dependencies throughout the framework for better performance and compatibility

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Dozens of small issues have been resolved — from performance tweaks and validator fixes to undo/redo behavior and layout stability.
Expect a smoother, more predictable editing experience across the board.

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The developer documentation has been expanded and reorganized, making it easier to dive into Freon’s internals or contribute to the project.
You’ll also notice improved color themes and styling options throughout the UI.

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We’re thrilled to welcome new contributors to the Freon community!
Special thanks to:

• @Ulyana-F1re — for major UI and reference improvements
• @globallyunique — for CSS and editor layout enhancements

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If you’d like to explore every commit and pull request, check the full changelog on GitHub.