Changes in version 1.0.4

Enhancements
  - droped rgdal dependencies and qualified the sp dependency to >= 2.0-0.


                       Changes in version 1.0.3

Enhancements
  - changed sp::over methods to sf corresponding methods.


                       Changes in version 1.0.2

Enhancements
  - changes to match dependencies on the upcoming new versions of sp and rgdal.
  - Updated the "proj4string" slots in data files to match the new CRS representation.
  - Changed the use of the proj4string() function to use the whole CRS object, including
    the new WKT2_2019 string representation needed for PROJ >= 6 and GDAL >= 3.