Extends the netlify-cms-widget-markdown with 3 additional columns modules: 2 columns, 3 columns and 4 columns layouts.
The classes are based on the bulma 12 columns system.
To see the results as colums You need to either import bulma globally to both the backend and frontend of your site, or write the columns class and the according is-1, is-2,...,is-12 classes yourself.
To register the widget, add the editor_components:['image','code-block','columns-layout','columns-layout-3','columns-layout-4'], to every markdown widget in your config.yaml file. Then add the CMS.registerEditorComponent({...}) modules to your cms.js file. If you have bulma imported or custom classes made for the columns then you are all set and done!
If you have any problems adding the modules to netlify cms follow the official guide.