* Adjust heading level and only heading with intro text
* Adjust heading level
* Adjust code example and guide card heading levels
* Adjust tests for new heading levels
* Adjust rendering test for new heading levels
* Create migrate-colors-primer-18.js
* Update colors round 1
* upgrade primer packages
* Update index.scss
* Replace auto colors
* remove btn-primary-matte
* Turns out the class names and variables names DONT LINE UP... ugh....
* Check for allowed var colors