Updated changelog to reflect release

Author: linkdotnet

CHANGELOG.md

@@ -5,8 +5,14 @@ All notable changes to **ValueStringBuilder** will be documented in this file. T
 <!-- The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) -->
 
 ## [Unreleased]
+
+## [0.9.1] - 2022-04-06
+
+This release brings extensions to the `ValueStringBuilder` API. For `v1.0` the `ValueStringBuilder` tries to be en par with the`System.Text.StringBuilder`.
+
+### Added
  - Added extension method for `System.Text.StringBuilder` to transform into `ValueStringBuilder` without additional allocation and the other way around.
- - Added `Length` readonly property which gives the length of the represented length. 
+ - Added `Length` readonly property which gives the length of the represented length. Added `Clear` to set the `ValueStringBuilder` to the initial point.
 
 ## [0.9.0] - 2022-04-04
  - Initial release