geom_fourfold() has a new argument labels. With labels = "both", each side of the display is labeled with the name of the variable and the level, as in vcd::fourfold(), for example “Gender: Male”. Suggested by Michael Friendly.
The documentation of geom_fourfold() now explains that, if drawn, the axis titles (which theme_fourfold() hides by default) appear next to the levels of the other variable (e.g., an x-axis label would appear next to the levels of y, being that its variable levels appear at the top and bottom of the fourfold display). Suggested by Michael Friendly.
ggfourfold 0.1.1
Corrected the DOI for Friendly and Meyer (2016) in the package description.
