As I saw that this feature was added and in the demo. I looked into the code on how to enable it. <img width="199" alt="image" src="https://user-images.githubusercontent.com/10818702/167595363-cbf27359-1834-47bc-9418-c9f1a5f4bea9.png"> I opened a pull request https://github.com/rtfpessoa/diff2html-cli/pull/134
