Update to 0.34.2, drop support for Python 3.4 and other legacy stuff
    
    Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1795134
    
    Since we cannot backport this to Fedora 32 due to Python 3.4, I've removed
    legacy parts of the spec file:
    
     - %python_provide is not needed on Fedora 33+
     - Conflicts with Python 2 versions of python-wheel is not needed after 3 releases
    
    Updated the description to match current upstream one.
    Moved the build of the wheel to %install because the new source structure
    requires wheel installed in order to use setup.py bdist_wheel.
    
    Reordered the spec a bit.
    
    Also, remove the unused python26 test dependency.