Installation

[g7sim]

A. In the readme You load content_css: 'https://netdna.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css', --- in the plugin.js stands : var version = 'v5.12.0';
Can You change to the real link - i think it is https://cdn.jsdelivr.net/npm/@fortawesome/[email protected]/css/all.min.css (evtl. it is possible to add the fonts in a directory and also the all.min.css)

B. Also some icons are grayed out - evtl. the specific mce-fontawesome.css is not complete (or the css is for the pro)

C. Can You please change the name of the installation-directory from fontawesome to fontawe5 (or similar) so that compatibility with older (also other) versions is made sure.
tinymce.PluginManager.add('fontawesome' ... to ... tinymce.PluginManager.add('fontawe5'..... etc.

D. I dont want to talk unmodest about options like font-size, colors and rotation etc.) which the ckeditor-version has (just a proposal)