.NET Framework 4.6 required
Azure Service Bus Transport version 9 depends on Azure Service Bus client version 5 which requires .NET Framework 4.6.
Client-side batching (flush interval) aligned with Microsoft Azure Service Bus client default
The default value for client-side batching configured using BatchFlushInterval(TimeSpan) API has changed from 0.5 sec to 20 ms to align better with the Azure Service Bus client default value.