update changelog files

Author: alphaville

CHANGELOG.md

@@ -19,16 +19,16 @@ recorded.
 - Use the component changelogs above for detailed release notes, migration
   notes, and module-specific fixes.
 - Not every repository change appears here. Day-to-day implementation details
-  usually live only in the relevant component changelog.
+  usually live only in the relevant component changelog files.
 
 ## Versioning Notes
 
 OpEn is a multi-component project, and not every part evolves on the same
 version number or schedule.
 
-- The Rust solver has its own release history in `rust/CHANGELOG.md`.
+- The Rust solver has its own release history in [`rust/CHANGELOG.md`](rust/CHANGELOG.md).
 - The Python package `opengen` has its own release history in
-  `python/CHANGELOG.md`.
+  [`python/CHANGELOG.md`](python/CHANGELOG.md).
 - The MATLAB interface and Docker image also track their changes separately.
 
 When a release affects multiple parts of the repository, this root changelog can
@@ -57,5 +57,5 @@ The main components live in:
 - [docker/](docker/)
 - [docs/](docs/)
 
-This changelog is intentionally lightweight so it can remain a stable landing
+This changelog is intentionally lightweight, so it can remain a stable landing
 page even as individual components evolve independently.

matlab/CHANGELOG.md

@@ -8,7 +8,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 Note: This is the Changelog file for the MATLAB interface of OpEn.
 
 
-## [0.1.0] - Unreleased
+## 0.1.0 - 31 March 2026
 
 ### Added
 
@@ -22,3 +22,4 @@ Note: This is the Changelog file for the MATLAB interface of OpEn.
 ### Changed
 
 - Added a dedicated MATLAB API area under `matlab/api` for the current interface, separate from the legacy MATLAB code.
+- Code generation in MATLAB is now moved to `matlab/legacy`

python/CHANGELOG.md

@@ -8,7 +8,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 Note: This is the Changelog file of `opengen` - the Python interface of OpEn
 
 
-## [0.11.0] - Unreleased
+## [0.11.0] - 31 March 2026
 
 ### Added
 
@@ -28,6 +28,7 @@ Note: This is the Changelog file of `opengen` - the Python interface of OpEn
 - ROS/ROS2 messages: using `uint64` instead of `uint8` to avoid overflow
 - Tighter checks of provided arguments in build configuration
 - Added `pytest` to the optional `dev` dependencies and documented local test, benchmark, and coverage workflows for Python and Rust contributors
+- Restructured folder structure of entire repo: opengen moved to folder `python`
 
 ### Fixed
 
@@ -318,6 +319,7 @@ Note: This is the Changelog file of `opengen` - the Python interface of OpEn
 * Fixed `lbfgs` typo
 
 
+[0.11.0]: https://github.com/alphaville/optimization-engine/compare/opengen-0.10.1...opengen-0.11.0
 [0.10.1]: https://github.com/alphaville/optimization-engine/compare/opengen-0.10.0...opengen-0.10.1
 [0.10.0]: https://github.com/alphaville/optimization-engine/compare/opengen-0.9.6...opengen-0.10.0
 [0.9.6]: https://github.com/alphaville/optimization-engine/compare/opengen-0.9.5...opengen-0.9.6

rust/CHANGELOG.md

@@ -11,7 +11,7 @@ Note: This is the main Changelog file for the Rust solver. The Changelog file fo
 <!-- ---------------------
       v0.12.0
      --------------------- -->
-## [v0.12.0] - Unreleased
+## [v0.12.0] - 31 March 2026
 
 ### Added
 
@@ -26,6 +26,7 @@ Note: This is the main Changelog file for the Rust solver. The Changelog file fo
 - Swapped the cross-platform timer dependency to `web-time`, removed the old `instant`-specific wasm feature wiring, and updated optimizer timing call sites to use `web_time::Instant`
 - Improved Rust-side error handling across constraints and core solvers so projection failures and invalid numerical states are reported explicitly instead of being silently flattened
 - Refined `BallP`, `EpigraphSquaredNorm`, and related constraint implementations and docs for stronger numerical robustness and clearer behavior
+- Restructured folder structure of entire repo: OpEn moved to folder `rust`
 
 <!-- ---------------------
       v0.11.1
@@ -361,6 +362,7 @@ This is a breaking API change.
      --------------------- -->
 
 <!-- Releases -->
+[v0.12.0]: https://github.com/alphaville/optimization-engine/compare/v0.11.1...v0.12.0
 [v0.11.1]: https://github.com/alphaville/optimization-engine/compare/v0.11.0...v0.11.1
 [v0.11.0]: https://github.com/alphaville/optimization-engine/compare/v0.10.0...v0.11.0
 [v0.10.0]: https://github.com/alphaville/optimization-engine/compare/v0.9.1...v0.10.0