Changes in version 0.4.0 (2025-12-18)                  

  - Arrows now respect scale transformations on x/y aesthetics (#13).
  - Arrows now support grid::arrow() appearance options (#14).

                 Changes in version 0.3.3 (2023-11-17)                  

  - Remove suggest for ggmap due to upstream api requirements.

                 Changes in version 0.3.2 (2021-12-06)                  

  - Improve usage of plot coordinate system when scaling arrow size
    (#9).
  - Fixed angle of line when centered arrows are used.

                 Changes in version 0.3.1 (2021-11-25)                  

  - Fixed issue with plotting resized vectors using the vecsize option
    (#8).

                 Changes in version 0.3.0 (2021-10-29)                  

  - Improved handling of non cartesian coordinate systems.
  - Fixed issue with plotting arrows on ggmap::qmplot() (#7).
  - Performance improvements.

                 Changes in version 0.2.0 (2019-02-05)                  

  - Changed ggplot2 to import
  - Updated README to reflect ggmap changes

                 Changes in version 0.1.0 (2017-08-15)                  

  - Added automatic grid detection
  - Added a NEWS.md.
  - Added geom_quiver() and stat_quiver()
  - Added unit tests