prepare release

Author: dbu

CHANGELOG.md

@@ -1,8 +1,8 @@
 Changelog
 =========
 
-2.3.0 (unreleased)
-------------------
+2.3.0
+-----
 
 ### Added
 
@@ -18,7 +18,7 @@ Changelog
 
 ### Fixed
 
-* Fix session_listener decoration when session is not enabled.
+* Fix `session_listener` decoration when session is not enabled.
 
 2.2.1
 -----

composer.json

@@ -22,7 +22,7 @@
  ],
  "require": {
  "php": "^7.1",
- "friendsofsymfony/http-cache": "^2.3@dev",
+ "friendsofsymfony/http-cache": "^2.3",
  "symfony/framework-bundle": "^2.8.18||^3.3||^4.0",
  "symfony/http-foundation": "^2.8.18.13||^3.3||^4.0"
  },