aws.s3 removed from CRAN

[Thomas-Hirsch]

It seems the aws.s3 package has been removed from CRAN, which means that installing s3tools using remotes::install_github won't work out of the box. It's still on anaconda, so in principle that would be the preferred installation method. There are no installation recommendations in the readme though (presumably because it's installed on AP by default) which can add to the confusion if things aren't working immediately.