Prepare 16.1.1 release.

Author: HexDecimal

CHANGELOG.md

@@ -4,6 +4,8 @@ Changes relevant to the users of python-tcod are documented here.
 This project adheres to [Semantic Versioning](https://semver.org/) since version `2.0.0`.
 
 ## [Unreleased]
+
+## [16.1.1] - 2023-07-10
 ### Changed
 - Added an empty `__slots__` to `EventDispatch`.
 - Bundle `SDL 2.28.1` on Windows and MacOS.