SE701:Roman numerals to Arabic ones

Title.

This is similar to what Mandrew says he's doing. For the record, he got in first. But he is now only doing the Arabic-->Roman conversion, not back the other way. So really our projects don't overlap.

Why I gave up on SVG-->PNG

Originally I set out to make an SVG to PNG converter. That didn't work out great, for the following reasons:

• Lisp has very few available image libraries (ch-image from [1] is the only one I could find. Which is impossible to install, after trying for almost a whole day..)
• SVG turns out to be much bigger standard than I gave it credit for. Would take about a month of coding to implement all the features in SVG, even assuming I got the image library set up.