New version
    
    - Allow the Size python class to be easily imported (vpodzime)
    - Make sure pyexecdir is defined (vpodzime)
    - Do not run Python 3 tests without python3 (vpodzime)
    - Disable python3 on RHEL (vpodzime)
    - Reflect the configuration in the spec file template (vpodzime)
    - Make documentation generation conditional (vpodzime)
    - Make python3 support conditional (vpodzime)
    - Require lower version of libpcre (vpodzime)
    - Sync the spec file with downstream (vpodzime)