Changes in version 0.0.3                        

  - Change lato_install() to lato_import() and use library(systemfonts)
    to resolve issues across operating systems.
  - Set default color ("white") and size (0.1) for geom_sf().
  - Deprecate lato_install() as the function name was misleading. Users
    have to manually install Lato on their computer first before
    importing the font into R with lato_import().
  - Add helpful error message when there are more than 8 groups for fill
    and color operations.
  - Add urbn_save() function to export images in some default small,
    medium, and large sizes which will work well in Urban publications.
  - Move geom_*() defaults from geoms.R to
    ggplot2::update_geom_defaults() in set_urbn_defaults(). If you want
    to set size to be an aesthetic mapping say in geom_point(), you no
    longer need to call ggplot2::geom_point(). Now you can just use
    geom_point() from library(ggplot2) for everything.
  - Fixed an error with urbn_geofact() so it works with
    library(geofacet).
  - Updated documentation to clarify functions.
  - Overwrote scale_*_ordinal() to use Urban Institute colors.

                        Changes in version 0.0.1                        

Updates because of ggplot2 3.0.0

  - Add global options for scale_continuous_colour() and
    ggplot2.continuous.fill() to set the palettes to "gradient" instead
    of "viridis"
  - Add scale_fill_ordinal() and scale_colour_ordinal() because ordered
    factors now have different scale functions.

New functionality

  - All syntax that included "urban" has been switched to "urbn". This
    will be the default for any R packages made at the Urban Institute.
  - colors.R contains eleven palette_urbn_* vectors. More information is
    available in the Urban Institute Data Visualization Style Guide.
      - palette_urbn_main is the eight color discrete palette of the
        Urban Institute with cyan, yellow, black, gray, magenta, green,
        space gray, and red.
      - palette_urbn_diverging is an eight color diverging palette.
      - palette_urbn_quintile is a five color blue palette that is good
        for quintiles.
      - palette_urbn_politics is a two color palette with blue for
        Democrats and red for Republicans.
      - palette_urbn_cyan
      - palette_urbn_gray
      - palette_urbn_yellow
      - palette_urbn_magenta
      - palette_urbn_green
      - palette_urbn_spacegray
      - palette_urbn_red