Added redis handler
Added unittests for the RedisHandler
Implemented periodic and configurable flushing of the queue
Added possibility to disable periodic flushing
Flush the queue when closing the handler [ci skip]
Tag messages with logging level info [ci skip]
Add support for passwor-protected redis instances [ci skip]
More intuitive name for the function [ci skip]
Fix tests for python 3 by parsing responses and comparing string instead of dicts
Improve docstrings and set threshold to 1 when disabling buffering
Added documentation for RedisHandler [ci skip]
Better formatting [ci skip]
Forgot to decode responses on the tests
Avoids race condition
Use of with statement for adquiring the lock
Correct some typos [ci skip]
blpop is blocking, therefore the wait is not needed
Changed default buffer size to 128
Merge pull request #92 from guillermo-carrasco/master

Added redis handler.

Great PR @guillermo!