Shape Encoding Issues

https://cdnjs.cloudflare.com/ajax/libs/vega/3.0.7/vega.js

https://cdnjs.cloudflare.com/ajax/libs/vega-lite/2.0.1/vega-lite.js

https://cdnjs.cloudflare.com/ajax/libs/vega-embed/3.0.0-rc7/vega-embed.js