We have a classroom full of old equipment that needs to run TouchDesigner 099 and must use svgwrite, but svgparser.py uses some newer code syntax (nonnegative_number = fr"(\d+\.?\d*|\.\d+){exponent}?" for a combination of formatting and regex parsing that is not available in Python 3.5.1). What is the latest earlier version of svgparser/svgwrite that will work with Python 3.5.1?