Adds CHANGELOG for #131

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
-## 2.7.5 - TBD
+## 2.7.5 - 2017-11-07
 
 ### Added
 
@@ -30,6 +30,14 @@ All notable changes to this project will be documented in this file, in reverse
   previously, as soon as one item in the collection failed, the same validation
   message was propagated to all other items. This is now resolved.
 
+- [#131](https://github.com/zendframework/zend-inputfilter/pull/131) fixes a
+  regression introduced in version 2.2.6 within
+  `BaseInputFilter::setValidatorGroup()` whereby it began emitting exceptions if
+  a given input was not an input filter. This raises issues when mixing input
+  filters and inputs in the same validator group specification, as you will
+  generally provide the input names as keys instead of values. The patch provide
+  ensures both styles work going forwards.
+
 ## 2.7.4 - 2017-05-18
 
 ### Added