- feat: getDir can parse different types of files in a dir
- feat: all file readers now have load and loadPromise, so a feature
like getDir can safely use the promise API
- chore: require syntax, prefix node builtins with `node:`
- moved configfile -> lib/reader
- moved readers/  -> lib/readers
- refactored regex lib to lib/regex
- refactored watch functions into lib/watch
- es6
  - add several uses of `...` (spread operator / param collection)
  - replace `for i` with `for ... of`
  - consolidate all cases of type detection into configfile.getType
  - replace `new Promise` with async/await
  - use shortened array function syntax
- ci: update to shared haraka/.github
- dep: eslint-plugin-haraka -> @haraka/eslint-config
- lint: remove duplicate / stale rules from .eslintrc
- package.json: populate [files]
- deps: version bumps