Update CHANGELOG according to the text used in gitea for v0.6.1-1

CHANGELOG.md

@@ -1,9 +1,11 @@
 # Changelog
 
 ## v0.6.1-1 Hotfix
-This fix prepares the python3 compatibility
+This fix prepares the python3 compatibility.  
+**Warning** you need a new prerequisites: python-unidecode
 
  - Remove mastodon tags (mt) options as it's deprecated. Compatibility between Peertube and Mastodon is complete.
+ - Simplify python2 specific functions
 
 ## v0.6.1
 

README.md

@@ -14,6 +14,7 @@ Search in your package manager, otherwise use ``pip install --upgrade``
  - python-magic-bin
  - requests-toolbelt
  - tzlocal
+ - unidecode
 
 ## Configuration