This is very important to maintain in any logging configuration we use in the future. The logger library defaults to True, and this means that in all those places above where we say
```
logger = logging.getLogger(__name__)
```
we'll be resetting the global logging configuration. This is clearly not what we want, hence setting False here.

We could make ourselves double safe by using a different form of logger invocation in every module, but that's noisy and complicated, and making sure to set disable_existing_loggers: False is accepted practice.