Add changelog entry.

Author: reitermarkus

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Added
 
+- Added `bytes::Buf` and `bytes::BufMut` implementations for `Vec`.
 - Added `format` macro.
 - Added `String::from_utf16`.
 - Added `is_full`, `recent_index`, `oldest`, and `oldest_index` to `HistoryBuffer`