develop
Fixed #5114 - Changed the request result limit for the EF Core Outbox Delivery service to scale up properly, Reworked the request rate algorithm to support delayed cancellation of in-flight requests.
Massive file cleanup
Integration of all external packages into MassTransit, split out into Abstractions, Middleware, and the core MassTransit assembly.
Fixed #6168 - Trim exception messages and stack traces to avoid overloading the message transport with extensively long headers
Adding multiple framework support for net461, netstandard2.0, netstandard2.1, and net6.0 where appropriate
Fixed #4996 - ensure all consume tasks are completed before completing the consumer within the transaction
Working through possible optimizations for SQS