Users should be able to filter out paths and we should have a list of paths to exclude

[SimonGurney]

Currently we get bogged down in SxS a lot, and its just junk. We should filter this out and make it optional to turn this filter off. At the same time, we could take a list of strings as args and skip those too, speeding up the crawl

[SimonGurney]

We do now provide the option to bail a share #56