Prepare to release 2.3.4

CHANGELOG.md

@@ -6,6 +6,8 @@ Updates should follow the [Keep a CHANGELOG](https://keepachangelog.com/) princi
 
 ## [Unreleased][unreleased]
 
+## [2.3.4] - 2022-07-17
+
 ### Changed
 
 - Made a number of small tweaks to the embed extension's parsing behavior to fix #898:
@@ -486,7 +488,8 @@ 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/2.3.3...main
+[unreleased]: https://github.com/thephpleague/commonmark/compare/2.3.4...main
+[2.3.4]: https://github.com/thephpleague/commonmark/compare/2.3.3...2.3.4
 [2.3.3]: https://github.com/thephpleague/commonmark/compare/2.3.2...2.3.3
 [2.3.2]: https://github.com/thephpleague/commonmark/compare/2.3.2...main
 [2.3.1]: https://github.com/thephpleague/commonmark/compare/2.3.0...2.3.1