develop
AddSqlMessageScheduler() method created so that scheduled messages can be canceled
Pause/Resume scheduled recurring message, Quartz, Hangfire (cleaned up by PBG)
Fixed #6017 - made ScheduleId and ScheduleGroup settable
Updated recurring to match non-recurring scheduler methods, updated container registration to match
Integration of all external packages into MassTransit, split out into Abstractions, Middleware, and the core MassTransit assembly.
Huge push towards optimization on startup, state machines, type discovery, caching, and the consume pipeline. Rebuilt the dispatch filter as a consume context filter for message type dispatch.
Minor tweaks
Massive file cleanup