prepare release

CHANGELOG.md

@@ -4,6 +4,17 @@ This file contains a complete enumeration of all [pull requests](https://github.
 for a given releases. Unreleased, upcoming changes will be updated here periodically; reference the next release on our
 [milestones](https://github.com/liip/LiipImagineBundle/milestones) page for the latest changes.
 
+## [2.3.1](https://github.com/liip/LiipImagineBundle/tree/HEAD) Symfony 5.1 support (2020-06-26)
+
+**Merged pull requests:**
+- Pass catched exception to give more insight on the original problem [\#1262](https://github.com/liip/LiipImagineBundle/pull/1262) ([pyrech](https://github.com/pyrech))
+- Don't throw top-level exceptions [\#1267](https://github.com/liip/LiipImagineBundle/pull/1267) ([mwoynarski](https://github.com/mwoynarski))
+- Fix typos in documentation [\#1278](https://github.com/liip/LiipImagineBundle/pull/1278) ([pgrimaud](https://github.com/pgrimaud))
+- Update documentation for Symfony 5.x [\#1276](https://github.com/liip/LiipImagineBundle/pull/1276) ([BlueSkunka](https://github.com/BlueSkunka))
+- Specify Twig package in the required dependencies [\#1273](https://github.com/liip/LiipImagineBundle/pull/1273) ([emulienfou](https://github.com/emulienfou))
+- Fix symfony 5.1 deprecations [\#1282](https://github.com/liip/LiipImagineBundle/pull/1282) ([mynameisbogdan](https://github.com/mynameisbogdan))
+- Clean up unused dependencies [\#1290](https://github.com/liip/LiipImagineBundle/pull/1290) ([dbu](https://github.com/dbu))
+
 ## [2.3.0](https://github.com/liip/LiipImagineBundle/tree/HEAD) Symfony 5 (2020-01-04)
 [Full Changelog](https://github.com/liip/LiipImagineBundle/compare/2.2.0...2.3.0)