Bump0310 (#3044)

* bump version

* changelog

Author: willmcgugan

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-## Unreleased
+## [0.31.0] - 2023-08-01
 
 ### Added
 
@@ -1141,6 +1141,7 @@ https://textual.textualize.io/blog/2022/11/08/version-040/#version-040
 - New handler system for messages that doesn't require inheritance
 - Improved traceback handling
 
+[0.31.0]: https://github.com/Textualize/textual/compare/v0.30.0...v0.31.0
 [0.30.0]: https://github.com/Textualize/textual/compare/v0.29.0...v0.30.0
 [0.29.0]: https://github.com/Textualize/textual/compare/v0.28.1...v0.29.0
 [0.28.1]: https://github.com/Textualize/textual/compare/v0.28.0...v0.28.1

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "textual"
-version = "0.30.0"
+version = "0.31.0"
 homepage = "https://github.com/Textualize/textual"
 description = "Modern Text User Interface framework"
 authors = ["Will McGugan <[email protected]>"]