Make changelog

Author: albertomercurio

CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased](https://github.com/qutip/QuantumToolbox.jl/tree/main)
 - Add error message for bad input in state/operator generating functions ([#603])
+- Support time-dependent operators on `dsf_mesolve` ([#610])
 
 ## [v0.39.1]
 Release date: 2025-11-19
@@ -383,3 +384,4 @@ Release date: 2024-11-13
 [#591]: https://github.com/qutip/QuantumToolbox.jl/issues/591
 [#596]: https://github.com/qutip/QuantumToolbox.jl/issues/596
 [#603]: https://github.com/qutip/QuantumToolbox.jl/issues/603
+[#610]: https://github.com/qutip/QuantumToolbox.jl/issues/610