2.1 Enhancements

• replaced mutate_each with mutate_all to be compatible with new dplyr release.
• can pass functions into stat_summary, eg stat_summary(fun.y=mean_sd, geom='point')
• data.frames in layers are embedded as structures in verbose outputs, e.g. geom_point(data=mtcars, aes(cyl, mpg)) will return

  [1] "geom_point(mapping=aes(x=cyl,y=mpg),
  data=structure(list(mpg = c(21, 21, 22.8, 21.4, 18.7, 18.1, 14.3, ... <truncated>