You no longer have to pass a hostname to initialise the addressmanager. The DefaultAddressManager always listens on localhost. If you want to listen on some other interface, you can use a different AddressManager.
Our integrationy unit test now works on expecting of multiple, slightly different errors -- different systems give slightly different errors.
Nothing uses the PortFinder anymore. We can now remove the PortFinder, and rename the files to make clear AddressManager is now the thing to use.