hadley/ggplot2 — pull request #927 by tsieger (2014-02-27 19:49:45+00:00)
Title: Add parameter "varwidth" to geom_boxplot

Resubmitting #900 (after rebasing against master and re-documenting with the development
version of roxygen2 (4.0.0)).

Summary: stat-boxplot and geom-boxplot enriched in order to enable displaying boxplots of width proportional to the square root of the number of observations, possibly weighted.