complete internal refactor from node-amqp to amqplib
fixing retry middleware
fixed autodelete forced on pubsubqueue. cleanup of unused old queuesFile serialization code. added naive multi-.queues file imp for clustered apps.
bumping version
added warning to clarify how to use with cluster
Merge pull request #27 from mateodelnorte/feature/refactor-to-amqplib

Feature/refactor to amqplib