Add changelogs

Author: albertomercurio

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Fix CUDA `sparse_to_dense`. ([#386])
 - Improve pseudo inverse spectrum solver. ([#388])
+- Add `smesolve` function for stochastic master equation. ([#389])
 
 ## [v0.25.2]
 Release date: 2025-02-02
@@ -109,3 +110,4 @@ Release date: 2024-11-13
 [#383]: https://github.com/qutip/QuantumToolbox.jl/issues/383
 [#386]: https://github.com/qutip/QuantumToolbox.jl/issues/386
 [#388]: https://github.com/qutip/QuantumToolbox.jl/issues/388
+[#389]: https://github.com/qutip/QuantumToolbox.jl/issues/389