+ - Create the directory of the released version and upload the doc artefact in it
+ - Remove the older releases so that people don't find them in google
+- Document the tag on https://github.com/simgrid/simgrid/releases and
+ on https://framagit.org/simgrid/simgrid/tags
+ - Upload the files SimGrid-3.XX.tar.gz, simgrid-3_XX.jar and
+ SimGrid-doc-3_XX.zip files to the changelog.