CRAN version 0.5.0

• 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)

spMaps 0.4.1

• fix file "LICENCE" format to UTF-8
• fix note on 0.4.0 (lazy data)
• active github actions and remove travis+appveyor

CRAN version 0.4.0

v0.4.0

prepare for cran

v0.1 : on CRAN

update readme

update readme