Users running a non-download version of Vanilla (pulled from github), on branch release/2019.016 or master from the last 2 weeks should upgrade to release/2019.017 or latest master for security reasons. Downloaded official open sources releases are not affected.
This will allow you to add chatango chatbox on the side panel of your forum. All you need to do is obtain the embedded chatbox code from your chatango group and add it to chatCode.txt file. Then follow the readme.txt enjoy.