Update CHANGELOG.rst

Author: LukaszMoskala

CHANGELOG.rst

@@ -13,6 +13,7 @@ version 0.3.0-dev
   improvements and changes with regards to the compression levels. For full
   details checkout the `zlib-ng 2.1.2 release notes
   <https://github.com/zlib-ng/zlib-ng/releases/tag/2.1.2>`_.
++ Added BSD support (tested only with FreeBSD)
 
 version 0.2.0
 -----------------
@@ -25,4 +26,4 @@ version 0.1.0
 + Add a fully featured gzip application in python m zlib_ng.gzip_ng.
 + Port Cpython's gzip module to use zlib-ng.
 + Port CPython's zlib module to use zlib-ng.
-+ Use zlib-ng version 2.0.6 as included statically linked version.
++ Use zlib-ng version 2.0.6 as included statically linked version.