Remove/change the Debug logging

[wiverson]

Right now there are eight places in the client code that write to Debug. I think these should be removed and replaced with slightly different options:

• ExceptionHandler.cs - remove
• Client.cs - replace with an (optional) debug notification callback

The test suite could add the debug callback notification to mimic existing behavior.

LMK if ok to send a PR.

[acupofjose]

Sure get in there!

[wiverson]

Resolved over recent PRs including.

Woot!