Bump to v0.31.1 (#469)

Author: ytdHuang

CHANGELOG.md

@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased](https://github.com/qutip/QuantumToolbox.jl/tree/main)
 
+## [v0.31.1]
+Release date: 2025-05-16
+
 - Introduce `QuantumToolbox.settings` and `auto_tidyup`. ([#460])
 
 ## [v0.31.0]
@@ -158,6 +161,7 @@ Release date: 2024-11-13
 [v0.30.0]: https://github.com/qutip/QuantumToolbox.jl/releases/tag/v0.30.0
 [v0.30.1]: https://github.com/qutip/QuantumToolbox.jl/releases/tag/v0.30.1
 [v0.31.0]: https://github.com/qutip/QuantumToolbox.jl/releases/tag/v0.31.0
+[v0.31.1]: https://github.com/qutip/QuantumToolbox.jl/releases/tag/v0.31.1
 [#86]: https://github.com/qutip/QuantumToolbox.jl/issues/86
 [#139]: https://github.com/qutip/QuantumToolbox.jl/issues/139
 [#271]: https://github.com/qutip/QuantumToolbox.jl/issues/271

Project.toml

@@ -1,7 +1,7 @@
 name = "QuantumToolbox"
 uuid = "6c2fb7c5-b903-41d2-bc5e-5a7c320b9fab"
 authors = ["Alberto Mercurio", "Yi-Te Huang"]
-version = "0.31.0"
+version = "0.31.1"
 
 [deps]
 ArrayInterface = "4fba245c-0d91-5ea0-9b3e-6abc04ee57a9"