Aioworkers

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* Atomic set in FileSystemStorage
* Correct default crontab in updater

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* BaseUpdater
* Example PingPong

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* FileSystemStorage fix for windows

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* FileSystemStorage method wait free space
* Module humanize
* Example of a cron worker

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* Context access optimization
* Logging cli parameter to specify log level for root logger
* Validate config param and load from io object
* Interact await function
* Fix aiohttp 2.0 import

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* Added ScoreQueue interface
* Implements ScoreQueue in TimestampQueue and RedisZQueue
* Lock refactor with catch aioredis.PoolClosedError
* Added interact mode in cli power by ipython
* Added amqp queue power by asynqp
* Explicity setup signals to stop
* Crontab rule in worker
* Fix stopped mistake in worker
* Fix merge MergeDict and subclass dict