usmap 0.5.1

New website for the package: https://usmap.dev
- Lightweight landing page containing useful information, links, and examples of usmap usage.
state can now be omitted when using fips(). In this case, all available FIPS codes are returned, sorted by state abbreviation, see Issue #28.
fips can now be omitted when using fips_info(). In this case, all available states are returned, sorted by state abbreviation, see Issue #28.
Fix duplicate coordinates from being removed during usmap_transform (if value columns differ), see Issue #32.
Prevent warnings introduced by ggplot2 v3.3.0, see Issue #35.
Set minimum R version to 3.5.0. Versions lower than this do not support the latest version of the rgdal package.

usmap 0.5.0

Released Friday, September 13, 2019.

Ability to include county name labels on county maps, see Issue #14.
- They currently work the same as state labels except they include the full county name (excluding the word “County”).
Ability to pass ggplot2::geom_polygon() parameters to plot_usmap(), see Issue #15.
- This is a breaking change and removes the lines parameter. The previous defaults of color="black", fill="white", and size=0.4 are maintained and will be used for any of those parameters that are omitted.
- Refer to the ggplot2::geom_polygon() documentation for more information.
- The following aesthetics are supported: alpha, colour/color, fill, linetype, size
- This feature provides more direct control over the appearance of plots.
Ability to exclude counties and states with new exclude parameter in us_map, map_with_data, and plot_usmap, see Issue #19.
New function (usmap_transform) to transform longitude/latitude point data frames into coordinate reference system that matches the plotted map, see Issue #21.
- Also includes usmap_crs() to easily access the coordinate reference system used by the package.

In the data frames provided by us_map(), long and lat have been renamed to x and y, respectively, see Issue #16.
- This should not affect the behavior of plot_usmap() but will be a breaking change for any code that relies on us_map().
Added contributing guidelines and templates, see Issue #24.
- These can be see in the .github folder.

Released Sunday, September 16, 2018.

Ability to include state abbreviation labels in state maps, see Issue #9.
- e.g. plot_usmap(labels = TRUE)
Add US Census Bureau regional divisions as constants for quick plotting of certain regions.
- e.g. plot_usmap(include = .northeast_region)
- The provided regions and divisions can be seen on this map by the US Census Bureau.
Allow ability to include only certain states while viewing county map, see Issue #11.
- e.g. us_map("counties", include = "TX") or plot_usmap("counties", include = c("AZ", "NM"))

Vectorize counties in fips, see Issue #10.
- e.g. fips("NJ", c("Bergen", "Hudson"))
Allow all columns in the data frame that’s passed to map_with_data() or plot_usmap() to be preserved.

Add Kusilvak Census Area (FIPS code 02158), replaces Wade Hampton Census Area (FIPS code 02270).

Released Sunday, June 3, 2018.

Update shape files to 2017 versions.
Improvements to fips and fips_info:
- Vectorization support (e.g. enter multiple states in fips to receive a vector of corresponding FIPS codes)
- e.g. fips(c("AK", "AL")) or fips(c("Alaska", "Alabama"))
- Mixed abbreviations and full names are also supported: fips(c("AK", "Alabama"))
- Improved warning and error messages.
Allow data to be specified by state abbreviation or full name in plot_usmap and map_with_data (instead of just by FIPS code).
- The data frame passed to plot_usmap or map_with_data (via the data = parameter), can now be a two column data frame with columns “fips” and “values” or “state” and “values”.

Released Tuesday, August 15, 2017.

Standardize documentation language.
Improve descriptiveness of error messages and warnings. ### Bug Fixes
Allow data passed to map_with_data and plot_usmap to contain FIPS codes with missing leading zeros.
- This usually occurs when the codes are read as numeric from a .csv file.

Released Saturday, April 29, 2017.

Add map_with_data function for adding user-defined data to map data.
Add ability to plot map with data automatically (utilizes new map_with_data function).

Released Sunday, January 29, 2017.