Dynamic worker join/leave is great! With that we can just discard failed workers and start new ones, looking forward to that.
I am still writing docs for my framework, and haven’t begin the unit test & CI/CD process yet  
Currently my framework aims more at RL things, so tests for RL algortihms will come first, distributed part is mainly aimed at resource hungry algorithms such as DQN-APEX, DDPG-APEX, IMPALA etc., and multi agent scenes. I really hope to complete code, doc and test for major RL algorithms part before July, then completes distributed scenes before August / September so you will have to wait a l-i-t-t-le more.  
They will be in a new github repo, and I will post updates as soon as possible.