Hello.
First of all, thanks for your work!

I found your project when I was looking for a tool for visualize diffs in .md files. For now, I have a .md file with differences that looks like:

# Some <del>crazy</del><ins>completely</ins> <ins>sane</ins>markdown.

It's <del>the</del><ins>ok</ins> <del>best</del><ins>I guess</ins>.
  - List Item 1
  - <del>List Item 2</del>
  - List Item 3

and I want to send it to the viewer. And mdp looks great for me. Only one thing is missing there. It is diff markers at the scrollbar. I found this implementation for atom https://github.com/surdu/scroll-marker. Unfortunately, I don't have enough knowledge to port it for use in mdp.

Can you evaluate is it possible to do it? And if it so maybe you will be interested to implement this feature?