Features
* add tests ([0ce79ef](https://github.com/officialpycasbin/rabbitmq-watcher/commit/0ce79ef9e451f5fdd7d56c74b08ddafe86b0cfb3))
* add thread for sub_watcher ([294f5e5](https://github.com/officialpycasbin/rabbitmq-watcher/commit/294f5e53296ceee428a29437d91616394da2b151))
* add unit tests ([5f0e35d](https://github.com/officialpycasbin/rabbitmq-watcher/commit/5f0e35d4ad6c69d5a8b62e106b02bfd69a4c8d1c))
* change to fanout pattern ([735e7f4](https://github.com/officialpycasbin/rabbitmq-watcher/commit/735e7f44b393cf2be4c698f2939feb26c18f1947))
* complete rabbitmq-watcher ([b70f48d](https://github.com/officialpycasbin/rabbitmq-watcher/commit/b70f48d1e6ebdb7c9b3961e0ffd2b83fbfb554de))
* init rabbitmq-watcher ([4b35f59](https://github.com/officialpycasbin/rabbitmq-watcher/commit/4b35f597dd822cfa1414dbb76e8739d715be4d57))