A compendium of new geometries, coordinate systems, statistical 
    transformations, scales and fonts for 'ggplot2', including splines, 1d and 2d densities, 
    univariate average shifted histograms, a new map coordinate system based on the 
    'PROJ.4'-library along with geom_cartogram() that mimics the original functionality of 
    geom_map(), formatters for "bytes", a stat_stepribbon() function, increased 'plotly'
    compatibility and the 'StateFace' open source font 'ProPublica'. Further new 
    functionality includes lollipop charts, dumbbell charts, the ability to encircle
    points and coordinate-system-based text annotations.

Density, distribution function, quantile function and random generation for the Generalized Gamma proposed in Stacy, E. W. (1962) <doi:10.1214/aoms/1177704481>.

The grammar of graphics as implemented in the 'ggplot2'
    package has been successful in providing a powerful API for creating
    static visualisation. In order to extend the API for animated graphics
    this package provides a completely new set of grammar, fully
    compatible with 'ggplot2' for specifying transitions and animations in
    a flexible and extensible way.

Geoms for placing arrowheads at multiple points along a segment, not just at the end; position function to shift starts and ends of arrows to avoid exactly intersecting points.

A 'ggplot2' extension that adds specialised arrow geometry layers. 
    It offers more arrow options than the standard 'grid' arrows that 
    are built-in many line-based geom layers.

Mapping tools that convert place names to coordinates on the fly.
    These 'ggplot2' extensions make maps from a data frame where one of the
    columns contains place names, without having to directly work with the
    underlying geospatial data and tools. The corresponding map data must be
    registered with 'cartographer' either by the user or by another package.

Provides two methods of plotting categorical scatter plots such
    that the arrangement of points within a category reflects the density of
    data at that region, and avoids over-plotting.