1.6:

- use polkit for authentication instead of sudo
- only accept limited abbreviations of full package names
  o only the arch and .rpm extension may be omitted
  o use wildcards and fuzzy version for anything else
- add check that no updates_testing media are currently enabled
- add option to suggest a downgrade command
- rename main program to just 'qarepo'

1.5:

- ensure a '+' in a package name is taken literally