Last year the R remote sensing universe changed a bit and sp plus (partly) raster was deprecated. Terra/stars and sf replaced the deprecated packages and we had to update our packages that are depending on these packages.
We finally managed to update our RStoolbox package to the new remote sensing environment and it can now be installed again as known via install.packages().
We are very thankful to Konstantin Müller who took over the lead development rule – Benjamin and Jakob are still contributing but cannot fullfill the role of a lead developer/maintainer anymore.
Check out the corresponding webpages: