Prepare for next release

nijel · nijel · commit 8ab57e737d63 · 2017-10-10T14:59:03.000+02:00
Signed-off-by: Michal Čihař &lt;michal@cihar.com&gt;
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Change Log
 
+## [Unreleased]
+
 ## [4.2.3] - 2017-10-10
 
 * Make mbstring extension optional (though Symfony polyfill).
