Use a lighter library instead of Plotly.js

[psvenk]

Currently, we use Plotly.js in its default distribution (the package plotly.js-dist on NPM), which ships a 7.2M (1.7M gzipped) bundle! The partial bundle in the package plotly.js-cartesian-dist-min is 1.0M (343K gzipped), which is much better but still very heavy. I also tried creating a custom partial bundle (minified, of course) with only the box plot functionality (because that is the only functionality that we use), but this was still 690K (235K gzipped) and I haven't been able to include it in Aspine without also pulling in the devDependencies of Webpack and the full Plotly.js source code.

Considering that we only use Plotly.js for fairly lightweight box plots, maybe we should look into a more lightweight and simple library. As a stopgap solution, the lean branch uses the comparably light plotly.js-caresian-dist-min bundle.

Alternatives to Plotly.js:

• D3: 243K (80K gzipped) - this is actually the library that powers Plotly.
  • d3-boxplot: 4.2K (1.6K gzipped)
• Chart.js: 169K (52K gzipped)
  • chartjs-chart-box-and-violin-plot: 21K (6.2K gzipped)
• Flot: 104K (33K gzipped)
  • Box plot support unknown
• jqPlot
  • Box plot support unknown
• Chartist.js
  • Box plot support unknown