Data passed as the extra parameter to a logging statement doesn't appear in Sentry

[niran]

The README says that anything passed as extra that isn't reserved or private will show up in the dashboard. To get data to actually show up, you have to pass the desired dictionary inside another dictionary as the value for 'data' (e.g. extra={'data': {'username': request.user.username}}). See SentryClient.create_from_record to see why.

It's reasonable behavior, so I think the README just needs to be edited to reflect it.

[dcramer]

Update docs to reflect actual usage of extra data in logging (closed by 1b47180)