------ * add support for command `pubsub channel`, `pubsub numpat` and `pubsub numsub` * add support for command `client pause` * reconsitution of commands to make develop easier(which is transparent to user)
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1.0.2
------ * add support for cache (Cache and HerdCache class) * fix bug of `PubSub.run_in_thread`
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1.0.1
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* add scan_iter, sscan_iter, hscan_iter, zscan_iter and corresponding unit tests * fix bug of `PubSub.run_in_thread` * add more examples * change `Script.register` to `Script.execute`