Bug fixes

Fix an error regarding ckeditor buttons not showing - case sensitive 'zoom' required.

Additions
- Better color management using color variables, usage variables and a color Sass function

Fixes:
- https://github.com/emulsify-ds/emulsify-drupal/pull/82
- https://github.com/emulsify-ds/emulsify-drupal/pull/92
- https://github.com/emulsify-ds/emulsify-drupal/pull/94

Github milestone: 8.x-1.15

With Drupal 9 arriving next week, we're thrilled to announce here at Acquia, that with version 8.x-1.1 Acquia Purge is fully ready for Drupal 9 as well as the projects it depends on. This release has been extensively tested in both Drupal 8.8.6 as well as in Drupal 9.

Please note, when upgrading to this version immediately clear all caches after updating code. Not doing so may result in fatal errors when visiting unpublished nodes.

This release includes:

New for beta3
#3143890: Fix regressions from beta1 and beta2 and beta3