update changelog

Author: lkdvos

docs/src/changelog.md

@@ -30,6 +30,8 @@ When releasing a new version, move the "Unreleased" changes to a new version sec
 
 ### Fixed
 
+- Eigenvalue decompositions of diagonal inputs are sorted and have the same type as non-diagonal inputs ([#151](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/pull/151)
+
 ## [0.6.2](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl/compare/v0.6.1...v0.6.2) - 2026-01-08
 
 ### Added