2.1.0 - Added variants for .NET supported versions (3.5, 4, 4.5x, 4.6x)
2.0.8 Added Bridge to Queue recipient.
2.0.5 Fix inheritance problem whereby QueuedTransmitter replaced the NotifyAll which was wrong.
2.0.4 Added missing event unlatch
2.0.3 Fix bug in delayed add; to permit concurrency we only add new receivers after messages processed, however the test was wrong. Added an AutoResetEvent onto the queue to allow better and more efficient thread processing.