ADDED: hit-testing for ALL sample SVG's, with code comments showing how to do it correctly
ADDED: on-screen display of tapped-layer info, based on the #if OUTLINE_SHAPES code from mtrubnikov, although modified to be cleaner (it's in the DEMO project, instead of core SVGKit - you can copy-paste this code to your own projects if needed)
FIXED: all transform parsing, INSPIRED BY mtrubnikov code, but instead done using correct stripping of 0-length false arguments in output from Apple methods
FIXED: we were using opacity where we meant fill-opacity (as per mtrubnikov FIX)