Go ahead and use how you like. I meant to add the MIT License
indication to all source files, and I will do that now.
I write SVGKit as part of software for viewing and controlling an
automated telescope. StarMap was something I intended to yank out of
that and make stand-alone. Along with our database visualization. I
guess I got caught up with other things and there didn't seem to be a
huge amount of interest.
By far the biggest source of traffic is people searching for LaTeX and SVG.