Bump version
    
    Overview of changes:
    
     *  Added build-time tests
    
        Saturnin Demo now demonstrates how to add tests using TFKit and
        enable them on both Fedora and Debian.  (This means dependency bump
        to Saturnin 0.4.8, since overriding SATURNIN_CONF_PATH was not
        available, which made config-related tests hard in staged
        installations.)
    
     *  Enabled overriding path variables in launcher
    
        Launcher used to hard-code all environment variables.  This made
        testing in staged installations hard.
    
     *  Updated meta-data and templates
    
        An amount of smaller changes has been done to improve readability,
        maintainability and overall looks of packaging meta-data.