updating version of master to 2.4
Merge branch '2.3'
Merge branch '2.3'
Merge branch '2.3'
Merge branch '2.3'
Merge branch '2.3'
Merge branch '2.3'
Merge branch '2.3'
Merge branch '2.3'
merging 2.3 SQS addition/PubSub deprecation
removal of APIs deprecated in 3.0
marking master as 3.0 development branch
merging in latest from 2.3
Merge branch '2.3'
Merge branch '2.3'
Merge branch '2.3'
Merge branch '2.3'
Merge branch '2.3'
Merge branch '2.3'
Merge branch '2.3'