v0.0.174

🚀 Enhancements

• [threshold] add id prop for unique clip-path ids. #342

📝 Documentation

• [demo] update heatmap example code to match new api. #340

🏆 Contributors

• hshoff

Changes:
 - @vx/demo: 0.0.173 => 0.0.174
 - @vx/threshold: 0.0.171 => 0.0.174