Prepare to release 2.3.1

Author: colinodell

CHANGELOG.md

@@ -6,6 +6,12 @@ Updates should follow the [Keep a CHANGELOG](https://keepachangelog.com/) princi
 
 ## [Unreleased][unreleased]
 
+## [2.3.1] - 2022-05-14
+
+### Fixed
+
+- Fixed AutolinkExtension not ignoring trailing strikethrough syntax (#867)
+
 ## [2.2.4] - 2022-05-14
 
 ### Fixed
@@ -451,7 +457,8 @@ No changes were introduced since the previous release.
     - Alternative 1: Use `CommonMarkConverter` or `GithubFlavoredMarkdownConverter` if you don't need to customize the environment
     - Alternative 2: Instantiate a new `Environment` and add the necessary extensions yourself
 
-[unreleased]: https://github.com/thephpleague/commonmark/compare/2.3.0...main
+[unreleased]: https://github.com/thephpleague/commonmark/compare/2.3.1...main
+[2.3.1]: https://github.com/thephpleague/commonmark/compare/2.3.0...2.3.1
 [2.3.0]: https://github.com/thephpleague/commonmark/compare/2.2.3...2.3.0
 [2.2.4]: https://github.com/thephpleague/commonmark/compare/2.2.3...2.2.4
 [2.2.3]: https://github.com/thephpleague/commonmark/compare/2.2.2...2.2.3