A lot of people would upload their logo to their directory listing in SVG format. This would keep it looking really clean and fresh in modern browsers. Most people wouldn’t do it, but those that know what they are doing (like a designer) might like to show off a bit more.
If it is a simple changing of a line of code to allow SVG, I can change that for now, but might be nice a feature enhancement. I would just need to know which file to change and how to change it.