Update to 0.269
    Fix compilation with GCC 10 | GH-951
    Unbundle 'minizip'
    Add new BR: jsoncpp-devel, libnotify-devel, minizip-compat-devel, ninja-build
    Add new weak dep: fluidsynth-libs
    Add AppStream data and desktop file validation
    Update URL and sources link, now using HTTPS
    Replace tabs with spaces
    Switch to Ninja build
    SPEC file optimizations