A new Drupal core base theme
Drupal 8 introduced the concept of base themes in core by shipping two brand new base themes; Stable and Classy. These themes are very lean, and they come without any tooling that would be often needed when building applications using modern front-end technologies. Due to policy changes in Drupal core, we’ve more or less had the freeze development in these base themes. This means that it’s hard for us to provide these functionalities in the future as well - even if we wanted to.