* Name iterators something human readable
Remove intermediate async procs from stacktraces
Clean async traceback message from reraises message
* Remove unused import/variable
* Fix failing tests
Don't add {.stackTrace: off.} to anonymous procs (They already don't appear in stacktrace)
* Fix failing tests in pragma category
Now check that the nim is a routine type first so we don't run into any assertion defects
* Hide stack trace pragma in docs and update doc tests
User doesn't need to know if something won't appear so this more becomes verbose noise
If this is a bad idea we can always add a `when defined(nimdoc)` switch so we don't add {.stackTrace: off.} to the Future[T] returning proc for docs
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