build: rebuild with 9d95442 (updated summaries_cache).
repos: repos can never expire. (RhBug:1069538)
remove: BaseCli.reinstallPkgs
Wrap some recently added long lines.
tests: test effects instead of mock calls.
Support filtering by repository name in Base.reinstall.
Add repository-packages reinstall-old command.

Related: RhBug:908764
Add repository-packages move-to command.

Related: RhBug:908764
added forgotten import
not decompressing groups when --cacheonly option is set (RhBug:1058224)
fix read_comps: not throwing exceptions when repo has no repodata (RhBug:1059704)
fixes problem with TypeError in Base.read_comps() in python3 (RhBug:1070710)
downloads: fix fatal error message return value from download_payloads() (RhBug:1071518)

Adds unit tests.
exceptions: improve empty key handling in DownloadError.__str__().

Adds test_exceptions.py.
Add repository-packages reinstall command.

Related: RhBug:908764
remove: BaseCli.erasePkgs
Support filtering by repository name in Base.remove.
refactor: Reduce amount of code in repository-packages subcommands.
Add repository-packages remove command.

Related: RhBug:908764
Support removal N/A packages in Base.reinstall.