Add changelog to docs

Author: lkdvos

docs/make.jl

@@ -57,6 +57,7 @@ makedocs(;
         ],
         "Developer Interface" => "dev_interface.md",
         "Library" => "library.md",
+        "Changelog" => "changelog.md",
     ],
     checkdocs = :exports,
     doctest = true,

docs/src/changelog.md

@@ -0,0 +1,64 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## Guidelines for updating this changelog
+
+When making changes to this project, please update the "Unreleased" section with your changes under the appropriate category:
+
+- **Added** for new features.
+- **Changed** for changes in existing functionality.
+- **Deprecated** for soon-to-be removed features.
+- **Removed** for now removed features.
+- **Fixed** for any bug fixes.
+- **Security** in case of vulnerabilities.
+
+When releasing a new version, move the "Unreleased" changes to a new version section with the release date.
+
+[Unreleased]: https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/compare/v0.6.0...HEAD
+[0.6.0]: https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/releases/tag/v0.6.0
+
+## [Unreleased]
+
+### Added
+
+### Changed
+
+### Deprecated
+
+### Removed
+
+### Fixed
+
+### Security
+
+## [0.6.0] - 2025-11-14
+
+### Added
+- New `project_isometric` function for projecting matrices onto isometric manifold ([#67](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/67))
+- New `PolarNewton` algorithm for polar decomposition ([#67](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/67))
+- New matrix property functions: `ishermitian`, `isantihermitian`, `hermitianpart!`, `hermitianpart`, `antihermitianpart!`, and `antihermitianpart` ([#64](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/64))
+- Support for `BigFloat` via new `GenericLinearAlgebra` extension ([#87](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/87))
+- Mooncake reverse-mode AD rules ([#85](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/85))
+- GPU support for image and null space computations ([#82](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/82))
+- GPU support for polar decomposition ([#83](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/83))
+- GPU support for new projection operations ([#81](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/81))
+- Output truncation error for truncated decompositions ([#75](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/75))
+- Documentation for truncated decomposition keyword arguments ([#71](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/71))
+- Default algorithm implementations for GPU wrapper array types ([#49](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/49))
+
+### Changed
+
+- Made `gaugefix!` optional ([#95](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/95))
+- Renamed `isisometry` to `isisometric` for consistency with `project_isometric` ([#73](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/73))
+- Refactored `left_orth`, `right_orth`, `left_null` and `right_null` interface ([#79](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/79))
+- Improved GPU support for SVD operations ([#80](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/80))
+- Loosened strictness on hermitian checks ([#78](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/78))
+- Updated pullback tolerances ([#92](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/92))
+
+### Removed
+
+### Fixed