v1.16.3

• Update dependencies, including DoS security vulnerabilities in xlsx
• Render Preact to string before duplicate detection, needed for latest Preact. You may need smaller SVG output files thanks to better duplicate detection.
• Fix svgtiler not knowing its own version number (in .svg_tex files and command-line output)
• Fix exports when using svgtiler.js in browser or in Node
• Fix handling of symbol without viewBox and manual width/height via --tw/--th options (as in examples/tilt).