I'd like to be able to use things such as the tag for purposes of using font awesome icons, but CKEditor strips tags like this. If I place when in 'source' mode in ckeditor it gets removed as soon as I return to the standard mode. Is there a way to ensure that ckeditor allows these tags?
I saw that someone provided a solution here How to stop CKEditor 188.8.131.5274 from stripping <script> tags however in drupal 8 admin/config/content/ckeditor/edit/advanced does not exist.
I also saw the CKEditorPluginConfigurableInterface here https://api.drupal.org/api/drupal/core%21modules%21ckeditor%21src%21CKEditorPluginConfigurableInterface.php/interface/CKEditorPluginConfigurableInterface/8.2.x But I wasn't sure how to make use of that.
Is there a way to prevent CKEditor from removing content and tags written in 'source'?