New features:

CBS support for AMQP protocol
CBS is a type of authentication that relies on Shared Access Keys, like SASL-PLAIN. Instead of sending the shared access signature token in the URL used to connect to IoT Hub (which means the client has to disconnect and reconnect to update this token), the connection is opened anonymously and the SAS token is sent to a specific endpoint separately and can be renewed without disconnecting the client. This is a big improvement for reliability of the AMQP protocol stack.

Bugfixes:

A couple of typescript definition bugs were found while writing end-to-end tests and were fixed (f550328)
Links are now properly detached before disconnection in AMQP (15dc3a3)
Fix an error type when failing to connect using MQTT over Websockets (68cf52d)