chore: update changelog

Author: mcanouil

CHANGELOG.md

@@ -1,5 +1,17 @@
 # Changelog
 
+## Unreleased
+
+### New Features
+
+- feat: add multiple window decoration styles for code blocks (`macos`, `windows`, `default`).
+- feat: add `skylighting-fix` option to enable or disable the Skylighting hot-fix for Typst output (enabled by default).
+
+### Refactoring
+
+- refactor: update Typst processing to return block sandwich.
+- refactor: use utility functions for code-window extension.
+
 ## 0.1.0 (2026-02-27)
 
 ### New Features