Support non-contigious paths

[kasbah]

Would be cool to support paths that are non contiguous, i.e. ones that could be broken apart like this zero. Currently svg2mod will ignore the inner part of the path (leaving just a hole instead of an 0).

A while back, on the kicad.info forum, I was explaining the process for how to break these apart in Inkscape so svg2mod can convert them and it can be quite annoying to have to do that all the time.