Bumped version

Author: weierophinney

CHANGELOG.md

@@ -22,6 +22,24 @@ All notable changes to this project will be documented in this file, in reverse
 - [#49](https://github.com/zendframework/zend-validator/pull/49) updates the
   code to work with the upcoming zend-servicemanager v3.
 
+## 2.5.5 - TBD
+
+### Added
+
+- Nothing.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- Nothing.
+
 ## 2.5.4 - 2016-02-17
 
 ### Added