add CHANGELOG.md

Author: Vahid Tavanashad

CHANGELOG.md

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+# 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/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [dev] (MM/DD/YY)
+
+### Added
+* `mkl_umath` is now aligned with both numpy-1.26,x and numpy-2.x.x [gh-65](https://github.com/IntelPython/mkl_umath/pull/65)
+
+### Changed 
+* Migrated from `setup.py` to `pyproject toml` [gh-63](https://github.com/IntelPython/mkl_umath/pull/63)
+
+### Fixed
+* Fixed a bug for `mkl_umath.is_patched` function [gh-66](https://github.com/IntelPython/mkl_umath/pull/66)
+
+
+## [0.1.5] (04/09/2025)
+
+### Fixed
+* Fixed failures to import `mkl_umath` from virtual environment on Linux
+
+## [0.1.4] (04/09/2025)
+
+### Added
+* Added support for `mkl_umath` out-of-the-box in virtual environments on Windows
+
+### Fixed
+* Fixed a bug in in-place addition with negative zeros
+
+## [0.1.2] (10/11/2024)
+
+### Added
+* Added support for building with NumPy 2.0 and older
+
+### Changed
+* Updated build system from removed NumPy distutils to scikit-build, gain ability to build with Intel LLVM compiler ICX