Where do you think would be a good place to put this. Do you want a links to separate pages within your main project page? Or purely a collapsible section on the main page? HTML5 has a details tag that might be able to be used: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/details
I could whitelist that tag for our HTML sanitizer. It's not exactly the best looking though, so some CSS may be needed to clean it up.