Migrate from raster to terra and fix CRAN archival failure - #75

Migrate from raster to terra and fix CRAN archival failure#75

temospena merged 4 commits into

masterropensci/slopes:masterfrom

60-abandon-raster-and-move-to-terraropensci/slopes:60-abandon-raster-and-move-to-terraCopy head branch name to clipboard