Use an Image for a Person Entity in Home Assistant

Update 2021-03-16: You can now use the UI to upload a picture for a person entity, which is much faster and easier than following my original instructions below. See https://www.home-assistant.io/integrations/person/#customizing-the-picture-for-a-person. I recently started using the person component in Home Assistant, but I did not see an obvious way to associate a photo with the person […]