* Fixbug: connection is disconnected before idel check, valueError will be raised if a connection(not exist) is removed from connection list
* Fixbug: abstract compat.py to handle import problem of asyncio.future
* Fixbug: When cancelling a task, CancelledError exception is not propagated to client
* Fixbug: XREAD command should accept 0 as a block argument
* Fixbug: In redis cluster mode, XREAD command does not function properly
* Fixbug: slave connection params when there are no slaves
<a name="1.1.7"></a>