• https://cdn.bootcdn.net/ajax/libs/vega/5.20.2/vega-core.js
• https://cdn.bootcdn.net/ajax/libs/vega/5.20.2/vega-core.min.js
• https://cdn.bootcdn.net/ajax/libs/vega/5.20.2/vega.js
• https://cdn.bootcdn.net/ajax/libs/vega/5.20.2/vega.min.js