Update CHANGELOG

CHANGELOG.md

@@ -4,18 +4,19 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## Unreleased:
+## Bicleaner AI 2.2.0:
 ### Added
 - Support tokenizing by characters (useful for Chinese).
 - CLI option to configure minimum words/tokens to be omited/replaced.
 
 ### Changed
 - Refactored Tokenizer class.
 - Update HF hub.
-- Create only one Tokenizer object per process in noise function.
 - Removed external tokenizer option.
+- Improved begginers guide.
 
 ### Fixed
+- Create only one Tokenizer object per process in noise function.
 
 ## Bicleaner AI 2.1.0:
 ### Added