The removal of Sonarr v3 support (commit d45563cf) introduced a bug
resulting in media naming no longer working due to the `:4` key suffix
not being checked anymore.
Additionally, there were some tests under `src/tests/` that needed to be
moved to `tests/`. One of these tests in particular helped identify this
bug. Those tests have been moved to the appropriate location.
In order to avoid confusion, the `v3` and `v4` version indicators for
certain naming format keys has been moved to their own column in the
`list` command table.
Robert Dailey