ggplot2 0.8.9

Many bug fixes, particularly contributed by Kohske Takahashi. Just needs testing before release.

ggplot 0.9 "diaspora"

Remove functionality from ggplot2, and instead use packages:

• ggplot_layers
• ggplot_scales
• ggplot_bin
• ggplot_legends
• ggplot_spatial
• ggplot_coord
• lubridate
• reshape2
• fortify

Better development practices:

• remove dependency on proto, and convert all methods to S3.
• use roxygen + helpr instead of home grown documentation system
• NAMESPACE, exporting minimal functions

ggplot2 1.0

• easy access to scales, making it possible to compute the coordinates of data yourself