[why]
It does not really make sense to couple the names of the download files
to some currently existing directories in the repo. They could be
different, especially if current version and requested version differ.
[how]
Complete rewrite. Fetch the release data from Github and examine the
release database.
Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>
[why]
It fetches the release we did last, which can be a release candidate.
But we want the latest release, or some other specified one.
[how]
Add parameter for the version tag.
[note]
Also correct some docs.
Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>