Continue replacing System.Collections with System.Collections.Generic
Automated merge with http://hg.rabbitmq.com/rabbitmq-dotnet-client
Eliminate a few more imports of System.Collections
Remove more imports of System.Collections
Ditto
System.Collections is still necessary here
Leave a comment that explains why SynchronizedSortedList is used for unconfirmed set
Backout a commit that does not belong to this branch
Correct crefs