+ Use `cosmiconfig` instead of rolling our own code (which gives us YAML support)
+ Look for the config in these locations, and in this order:
+ A `jsdoc` property in `package.json`
+ `.jsdocrc` (can be JSON or YAML; comments not allowed for JSON)
+ `.jsdocrc.json` (comments allowed)
+ `.jsdocrc.yaml`
+ `.jsdocrc.yml`
+ `.jsdocrc.js`
+ `jsdoc.config.js`
