Implement Barcode Plot for Data Points

[Daniel Marsh-Patrick]

In #46, we've allowed the option for different data point representations. This tracks the implmentation of a barcode plot instead of a box plot.

[Daniel Marsh-Patrick]

#47: Fixed issue with legend still rendering when the category is removed (if legend enabled). Resolves #47.

→ <<cset 628533d1e2dc>>

[Daniel Marsh-Patrick]

Accidentally closed instead of #49. Re-opening

[Daniel Marsh-Patrick]

Largely working. Just need to do the following:

• Hovering over lines breaks the tooltip (presumably as the data context has changed to a data point rather than a category). Consider adding the data point value to the tooltip also.
• Consider skipping over multiple plots of the same value to preserve the DOM (but add the count of values to the tooltip if doing the above).

[Daniel Marsh-Patrick]

#47: Renamed Data Points to Combo Plot and removed beeswarm (until we can implement it). Resolves #47.

→ <<cset 0765294d8228>>

[Daniel Marsh-Patrick]

Example using tooth growth data set:

[Daniel Marsh-Patrick]

1.1.0 is now fully live in the marketplace, so closing.