add an option -r aliase of --repo option in rpmkit.updateinfo.cli
sort out computations of errata and updates to avoid traversing these list more than needed
s/get_cve_details/fetch_cve_details/g in rpmkit.updateinfo.main
do not make {bzs,cves}_s; these are automatically serialized in _fmt_* called from _make_cell_data
changed the default value of the CVSS base metrics score
add an utility function to generate int representation of an errata to be used as comparison key in rpmkit.updateinfo.main; it should speed up sorting errata drastically
sort errata by id and make use of set() as much as possible
fix a bug that compute_delta in rpmkit.updateinfo.main returns older ones instead of delta results