Adds CHANGELOG entry for #147

Also removes stub for 3.0.0; master branch is targeted at 2.9.x-dev.

Author: weierophinney

CHANGELOG.md

@@ -2,27 +2,13 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
-## 3.0.0 - TBD
+## 2.9.1 - TBD
 
 ### Added
 
 - Nothing.
 
-### Deprecated
-
-- Nothing.
-
-### Removed
-
-- Nothing.
-
-### Fixed
-
-- Nothing.
-
-## 2.9.1 - TBD
-
-### Added
+### Changed
 
 - Nothing.
 
@@ -36,7 +22,8 @@ All notable changes to this project will be documented in this file, in reverse
 
 ### Fixed
 
-- Nothing.
+- [#147](https://github.com/zendframework/zend-mail/pull/147) fixes how address lists are parsed, expanding the functionality to allow either
+  `,` or `;` delimiters (or both in combination).
 
 ## 2.9.0 - 2017-03-01