Adds CHANGELOG entry for #181

Author: michalbundyra

CHANGELOG.md

@@ -22,6 +22,12 @@ All notable changes to this project will be documented in this file, in reverse
 
 ### Fixed
 
+- [#181](https://github.com/zendframework/zend-inputfilter/pull/181) fixes
+  missing abstract service factory registration in `Module` as per the
+  [latest documentation](https://docs.zendframework.com/zend-inputfilter/specs/#setup).
+  In particular, it ensures that the `InputFilterAbstractFactory` is registered
+  under the `input_filters` configuration.
+
 - [#180](https://github.com/zendframework/zend-inputfilter/pull/180) fixes
   attaching validators on creation of InputFilter - `priority` value is now used.