I should disguise my voice so that it doesn't look like I'm taking over this thread.
Hi. Apparently I'm in a work-on-my-plugins kick this week, because I also put a bunch of work into Bootstrap 4 Shortcodes which is an update to the Bootstrap 3 version that I worked on with filipstefansson and Simon Yeldon.
The Bootstrap 4 version tries to be a thinner layer, opting to apply classes and attributes to links, lists, and images inserted by the WordPress editor, rather than abstracting HTML into shortcodes as we did in the Bootstrap 3 version.
The plugin includes full documentation with functional examples of each shortcode (generated with a nifty Mustache template) and a handy way to insert the examples into the WordPress editor.
So check it out if you get a chance. I'd love to hear your ideas on how this can be the most useful to you. I'll be submitting it to the WordPress Plugin repository when it's a little further along.