Release: Change name of remote repository

Drone CI: Change storage driver to `overlay`

Build: Add release script

Coursier: Remove lock to fix occasional CI failures

Build: Use unannotated Git tags as version numbers

If a Git tag was created with `git tag $version`, it would not be
considered by `git describe`. Add the `--tags` parameter to fix this.

See also https://git-scm.com/docs/git-describe.