[Feature request] Supporting treemaps in ggplotly

[pierreroudier]

Just a feature request, as opposed to a bug report: the support of geom_tree from the treemapify package in ggplotly would be neat.

Example below:

library(ggplot2)
library(treemapify)
library(plotly)

p <- ggplot(G20, aes(area = gdp_mil_usd, fill = hdi)) +
  geom_treemap()

# Print static plot
print(p)

ggplotly(p)

Cheers,

[cpsievert]

Added to #566