changed Africa CDC colour palettes based on updated communication style guidelines
created Africa CDC brewer base palettes
created NHS brewer base palettes
created Global Nutrition Cluster palettes and themes
created palette brewer functions for sequential, divergent, and qualitative colour palettes
pkgdown websitefig.alt specifications in all package documentationtint_colour*() and shade_colour*() functions in which they return the opposite percentage tint or shade of a colour or a set of coloursThis is a pre-release of the paleta package. This package includes the
following features: