spMaps 0.5.1.9000

GITHUB ACTIONS :

Actions artifacts v3 is closing down, update to v4
test-coverage.yaml updated

changes in version 0.5.0 (2023-08-31)

rgeos and raster replaced by sf
add necessary minimal version sp (>= 2.0-0)

FIX DEPENDENCIES :

fixing issue #6 (dependencies on rgdal, rgeos, and/or maptools)

changes in version 0.4.1 (2023-08-02)

fix file "LICENCE" format to UTF-8
fix note on 0.4.0 (lazy data)

Changes in version 0.3 (2018-05-03)

BUGFIXES:

CRAN : Some checks were failing.

Changes in version 0.2 (2017-12-15)

NEW FEATURES:

add Turkey and Chypre
keep country code