Horizontal Integration: Customize distributions with sub-profiles

We’ve been starting many of our projects using Acquia’s Lightning distribution. This gives a good, consistent starting point for and helps speed development through early adoption of features that are still-in-the-works for Drupal 8. Like other distributions, Lightning bundles Drupal Core with a set of contributed modules and pre-defined configuration. While Lightning is a great base to start from, sometimes you want to deviate from the path it provides. Say for example you want to use a Paragraphs based system for page components, your client has a fairly complex custom publishing workflow, and you also have different constraints for managing…