Discover and/or markup properties to be displayed.

[WardCunningham]

This plugin, as written, works with only one dataset, the Nike Material Sustainability Index. It should be generalized to work with any multi-dimensional data using mechanisms similar to the Radar plugin.

• discover data marked with .radar-source
• discover or markup columns with all, some, or no numeric data
• discover or markup or generate a "Total" for the y-axis
• markup column or column property for consistent coloring
• animate missing data by "vanishing" markers
• draw and animate numerical scales for x and y-axis

Release as 1.0.0 when all of these are either done or discarded as not doable.