NickAkhmetov/Visx Conversion

[NickAkhmetov]

Accomplished items:

• [x] Display heatmap
• [x] Display side-bars
• Render violins Violins appear, but further work is on hold as they don't look right.
• [x] Display tooltips
  • [x] On heatmap
  • [x] On bars
  • [x] On tick labels
• [x] Reordering of rows/columns
  • [x] Drag and drop
• [x] Section resizing
• [x] Color legend
• [x] Basic autosort
• [x] Improve section resizing to avoid section size state desynchronization
• [x] #31

Remaining potential TODOs:

• [ ] Keyboard controls for moving rows/columns
• [ ] Expanding rows to display inline barchart
• [ ] Fix violins?
• [ ] Styling improvements