v0.3.1

Changelog

• c56e3b5 Add AI-friendly design note to README introduction
• 38502e5 Add container-scoped box IDs
• 2e70baf Fix 6 bugs: arrow rendering, touchleft routing, diagram width, legend sizing, font sanitization, docs
• 0e12d13 Fix module path to github.com/StephanSchmidt/control
• c93e8ad Increase spacing between group label text and top border
• 05da657 Link to Slidev, reveal.js, and dex in README introduction
• 2f7c5cf Regenerate tutorial SVGs
• b564966 Update kong dependency and regenerate tutorial SVGs