NanoHTTPD: Add path support to Cookie, Support PropertyChangeListener to track run state, Add getListeningUrl() and getListeningAddressPort(), Optional support for multiple headers of same name
ServerRunner: add support for the GUI in SimpleWebServer
SimpleWebServer: Provide an optional GUI for monitoring (e.g. when debugging), Make getRootDir(), and addWwwRootDir() public. Also make getRootDirs() but protect the list by making it unmodifiable.