We get OK_WASEMPTY from the processor when there
usually should be something. Rarely, this is not the case.
Let the callers know about this state at least
We now resolve symlinks when adding, so we can properly check
whether a path is excluded or not. This accidently also
helps with duplicates.
Excluded paths are hardcoded and can also be appended to
by the user using the settings.
Closes: #34
