Extended release notes here[1] as well as an explanation of the new object system for extending it, ggproto, here[2] [1] https://github.com/hadley/ggplot2/rel

Extended release notes here[1] as well as an explanation of the new object system for extending it, ggproto, here[2] [1] https://github.com/hadley/ggplot2/releases/tag/v2.0.0 https://github.com/hadley/ggplot2/releases/tag/v2.0.0 [2] https://cran.r-project.org/web/packages/ggplot2/vignettes/extending-ggplot2.html https://cran.r-project.org/web/packages/ggplot2/vignettes/ex...