v1.1.3

• Add three ggplot2 scale functions: scale_*_pale(), scale_*_dark() and scale_*_discreterainbow().
• The function scale_*_rainbow() is deprecated and replaced by scale_*_discreterainbow().
• Fix the missing attribute of the palette function returned by colour() (bug introduced in v1.1.2).
• The documentation is expanded with several remarks on the use of Paul Tol's colour schemes.