Changes in version 0.5.1 (2026-01-29)                  

  - Update contemporary census data for States from 2020 to 2024.
  - Update package installation

                        Changes in version 0.5.0                        

  - Update Census Bureau data from 2020 to 2024.

                 Changes in version 0.4.0 (2021-10-12)                  

  - Update all data files to use current version of sf package.
  - Update Census Bureau data from 2016 to 2020.
  - Remove the us_boundaries() function was a needless wrapper around
    other functions.
  - Prompt user to install data package rather than installing it for
    them.

                 Changes in version 0.3.1 (2018-03-29)                  

  - New vignette demonstrating the package's functionality (#40).
  - Additions and clarifications to documentation following @AndySouth's
    suggestions for JOSS peer review (#38).
  - us_cities() now returns an sf object rather than a data frame (#36).
  - us_cities() gains a states argument to match other functions in the
    package (#35).
  - Citation to JOSS paper.

                 Changes in version 0.3.0 (2017-07-08)                  

  - Moved most data to USAboundariesData. This improves loading time and
    permits more frequent updates to the user-facing package.
  - Added state plane projections table and functions (@jfbratt). Now
    users can get an appropriate projection for a state.
  - Converted all boundary objects to sf objects.
  - Updated all contemporary census boundaries from the 2014 to the 2016
    versions.
  - Added zipcode tabulation area centroids.
  - Added historical city populations compiled by Erik Steiner at
    CESTA/Stanford University.

                 Changes in version 0.2.0 (2016-01-04)                  

  - Added contemporary boundaries for states, counties, and
    congressional districts.
  - Import many fewer packages. The us_boundaries() function no longer
    has an option to return a fortified data frame. It is assumed that
    users will convert the SpatialPolygonsDataFrame objects to whatever
    format they need.
  - High resolution data is now available in the USAboundariesData
    package.

                 Changes in version 0.1.1 (2014-12-24)                  

  - Fix to README.md as requested by CRAN.

                  Changes in version 0.1 (2014-11-25)                   

  - Initial release.
  - us_boundaries() returns an sp object or a data frame which can be
    plotted.