add this to changelog

Author: chillenb

CHANGELOG.md

@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 * Added `mkl_fft` patching for NumPy, with `mkl_fft` context manager, `is_patched` query, and `patch_numpy_fft` and `restore_numpy_fft` calls to replace `numpy.fft` calls with calls from `mkl_fft.interfaces.numpy_fft` [gh-224](https://github.com/IntelPython/mkl_fft/pull/224)
 
+### Changed
+* In `mkl_fft.fftn` and `mkl_fft.ifftn`, improved checking of the shape argument `s` to use faster direct transforms more often. This makes performance more consistent between `mkl_fft.fftn/ifftn` and `mkl.interfaces`. [gh-283](https://github.com/IntelPython/mkl_fft/pull/283)
+
 ### Removed
 * Dropped support for Python 3.9 [gh-243](https://github.com/IntelPython/mkl_fft/pull/243)