Closes #246 #284 #285 #288 #289 #291 - Improved Fluo cluster management.

Pull request for  #246 #284 #285 #288 #289 #291
might be good to do this clean up in finally or use try w/ resources.   Since the main thread is exiting, this would only matter if the stop methods were shutting down a non daemon thread that could keep the process alive.  If this is not the case, it does not matter.. the process will exit.