Bugfixes
- Fixed authentication with Sentinel
- replyTimeout connection argument fixed. All query methods except `blpop()`,
`brpop()`, `brpoplpush()` now raise `TimeoutError` if reply wasn't received
within `replyTimeout` seconds.
- allow any commands to be sent via SubscriberProtocol
- Fixed bug in handling responses from Redis when MULTI is issued right after
another bulk command (SMEMBERS for example)
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