refactor(worker): use async
feature(queue): add unique mode
refactor(queue): set the last element with negative offset
refactor(redis-driver): unique pop assumes better integrity
feature(timeout): add a timeout for the execution of the action
fix after comments
Merge pull request #4 from JBustin/improve-integrity-warranty

refactor(integrity): assurer une meilleure garantie d'intégrité des données