[#BOXAPP-15: Adding CacheQueue]
[#BOXAPP-15: Adding check for duplicated elements]
[#BOXAPP-15: Adding queueConfig to Hazelcast instance]
[#BOXAPP-15: Adding init map to avoid nullpointer]
[#BOXAPP-20: Adding remove specific object from queue method]
[#BOXAPP-16: Adding utility methods to engine]
[#BOXAPP-16: Change parent pom]
[#DEVSUPP-64: added different check for recipients in headers]
[#DEVSUPP-64: fixed conflict with master on poms]
[#DEVSUPP-64: added list and undisclosed recipient check on Recipients]