The Features module allows you to export configuration to code in an easy way.

This module is essential for configuration management in Drupal 8

For Drupal 8, adds the ability to add CSS classes to link fields.

Some basics about Features and configuration management in Drupal 8

Provides some advanced layout and display options for content. "Display Suite is a module that takes over the rendering of entities."

This module adds a view mode selector field to any entity

How to push branches from one git remote to another

The best part about this module is that each role can have a default text format.

Drupal 7 core allows for reordering the formats in the UI, thus picking a default too. However, there is no role based ordering, as there is with the Better Formats module.

This Drupal 8 module allows to restrict text formats on fields.