Added CHANGELOG for #13

Author: weierophinney

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
-## 2.6.1 - TBD
+## 2.6.1 - 2016-02-04
 
 ### Added
 
@@ -18,7 +18,10 @@ All notable changes to this project will be documented in this file, in reverse
 
 ### Fixed
 
-- Nothing.
+- [#13](https://github.com/zendframework/zend-tag/pull/13) updates the
+  zend-stdlib dependency to `^2.7 || ^3.0`, instead of just `^3.0`, allowing
+  it to work with users of zf2 v2 versions. Since the functionality consumed is
+  present and unchanged in both versions, this is a safe constraint.
 
 ## 2.6.0 - 2016-02-03