tests: latest libcomps version has a GroupID objects for env.option_ids.
remove: Base._limit_installonly_pkgs().

No use, no love.
support 'dnf group remove' (RhBug:1013764)
Update some old-style classes.
remove: dnf.yum.rpmsack.RPMDBProblem*.
New version: 0.4.3
build: 0.4.3-1
build: 0.4.3-2
Base.download_packages() must not assume self.progress exists.

Base can only see it when dnf runs from the command line but not otherwise.
fix: install does not report file conflicts (RhBug:1017278)
Resetting base.goal.
Improve error reporting in hdrFromPackage()
Don't confuse users when file already exists

Already downladed files were handled correctly, but since
msg != None, a confusing [FAILED] prefix was displayed.
Get rid of that, show [SKIPPED] instead.
refactor: _handle_new_remote(), _handle_new_pkg_download()

Want a single code path in the Repo class where remote
librepo handles are being created.

Removes 3 functions but no semantic changes. Fixes a subtle bug
that _handle_new_pkg_download() used only baseurl[0].
enhancement: use proxy settings
enhancement: LRO_FASTESTMIRROR

We should enable FASTESTMIRROR earlier so not only packages but
also metadata use the sorted mirror list.  Also, turn it off when:

- we're reusing mirrorlist (mirror_setup=False)
- repo uses baseurls (keep the user supplied order)