Update to 2.1.0
    
    The 2.0.0 stable version was finally published before some time and
    contains many bug and security fixes. Also, the first minor stable
    release 2.1.0 has been released recently. Upstream promised that will
    support the stable release at least for two years and will make minor
    releases regularly. So let's update to 2.1.0 and use the traditional
    versioning scheme in hope that we will update the package just with
    official releases...
    
    Resolves: rhbz#1833540