Better handling of caught ExceptionInfo objects

[tomjakubowski]

We could use (ex-data) et al. to produce a nicer message than what (pr-str) gives. Also the stack trace for them isn't particularly useful.

[tomjakubowski]

The stack trace could probably be improved with the new REPL source mapping support.

[MalloZup]

autogenerated with https://github.com/MalloZup/doghub: issue inactive since 450 days. Please update the issue or close it