make data sorted before passing them to rpmkit.updateinfo.main.dump_datasets()
refactoring: dce in rpmkit.updateinfo.main.dump_datasets()
make rpmkit.updateinfo.main.main() not refering a global, loglevel initialization is done in rpmkit.updateinfo.cli.main instead
change log level of metadata info in rpmkit.updateinfo.main.main
log metadata info before instatiate 'base' in rpmkit.updateinfo.main.main
remove a global variable represents timestamp in rpmkit.updateinfo.main.main
add some more argument descriptions
sort out and extend results of rpmkit.updateinfo.main()
follow changes (rename of a global, ERRATA_KEYWORDS) in rpmkit.updateinfo.main