Log Message:
2.10.6
* Various performance improvements. Thanks cjsimpson
* Fixed a bug with SRANDMEMBER where
* Added HSTRLEN command. Thanks Alexander Putilin
* Added the TOUCH command. Thanks Anis Jonischkeit
* Remove unnecessary calls to the server when registering Lua scripts.
  Thanks Ben Greenberg
* SET's EX and PX arguments now allow values of zero. Thanks huangqiyin
* Added PUBSUB {CHANNELS, NUMPAT, NUMSUB} commands. Thanks Angus Pearson
* PubSub connections that that encounter `InterruptedError`s now
  retry automatically. Thanks Carlton Gibson and Seth M. Larson
* LPUSH and RPUSH commands run on PyPy now correctly returns the number
  of items of the list. Thanks Jeong YunWon
* Added support to automatically retry socket EINTR errors. Thanks
  Thomas Steinacher
* PubSubWorker threads started with `run_in_thread` are now daemonized
  so the thread shuts down when the running process goes away. Thanks
  Keith Ainsworth
* Added support for GEO commands. Thanks Pau Freixes, Alex DeBrie and
  Abraham Toriz
* Made client construction from URLs smarter. Thanks Tim Savage
* Added support for CLUSTER * commands. Thanks Andy Huang
* The RESTORE command now accepts an optional `replace` boolean.
  Thanks Yoshinari Takaoka
* Attempt to connect to a new Sentinel if a TimeoutError occurs. Thanks
  Bo Lopker
* Fixed a bug in the client's `__getitem__` where a KeyError would be
  raised if the value returned by the server is an empty string.
  Thanks Javier Candeira.
* Socket timeouts when connecting to a server are now properly raised
  as TimeoutErrors.