Wukongqueue

* allow to set log level
* set host,port as required argments

[1]: https://docs.python.org/3.6/library/queue.html
[task_done]: https://docs.python.org/3.6/library/queue.htmlqueue.Queue.task_done
[join]: https://docs.python.org/3.6/library/queue.htmlqueue.Queue.join