In order to create a new release from the current repository, perform the
following steps:

- Create a branch named "eo_x.y.z"
- Set version number in eo-conf.cmake
- Check/update NEWS file, set release date and version in NEWS.
- use the "archive_current.sh" script to create the source archive
- Build the packages
- Put source archive and packages files at SourceForge
- Post news on SourceForge project-page
- Send announcement to mailing lists
- Bump version number to next "x.y.z-edge" in eo-conf.cmake