[Indicator manual](https://github.com/cmu-delphi/covidcast-indicators/blob/main/_template_python/INDICATOR_DEV_GUIDE.md) This section should discuss: * the local and ansible/production templates * params sections * standard params that MUST be supported * optional standard params * how to choose defaults * defaults MUST allow production runs to be run every day without updating the params file We also need to actually design a standard for `params.json` so that the indicators work more similarly.