Clarify & Improve Exception Handling & Behaviour in Callbacks

[pglombardo]

🚀 Feature Request

In issues #553, #575 & #566, the exception policy for this client isn't clear and causes some user confusion.

The policy should be stated clearly. Either we don't allow exceptions in callbacks or we do allow them and then handle them in a very specific way.

Additionally we should consider allowing exceptions in callbacks with a well-defined behaviour to propagate those exceptions.

🔈 Motivation

🛰 Alternatives

📎 Additional context