Implemented: Font Awesome v4.7.0 by stackpath.bootstrapcdn.com

core/files.js

@@ -186,6 +186,9 @@ var files = {
         'resources/ext-core/3.0.0/ext-core.jsm': true,
         'resources/ext-core/3.1.0/ext-core.jsm': true,
 
+        // Font Awesome
+        'resources/fontawesome/4.7.0/font-awesome.min.cssm': true,
+
         // jQuery v3.4.1
         'resources/jquery/latest/jquery.min.jsm': true,
 

core/mappings.js

@@ -383,9 +383,10 @@ var mappings = {
     },
     // StackPath BootstrapCDN
     'stackpath.bootstrapcdn.com': {
-        '/bootstrap/': {
-            '{version}/js/bootstrap.min.js': resources.bootstrapJS,
-            '{version}/css/bootstrap.min.css': resources.bootstrapCSS
+        '/': {
+            'bootstrap/{version}/js/bootstrap.min.js': resources.bootstrapJS,
+            'bootstrap/{version}/css/bootstrap.min.css': resources.bootstrapCSS,
+            'font-awesome/{version}/css/font-awesome.min.': resources.fontawesome
         }
     },
     // MaxCDN Bootstrap

core/resources.js

@@ -70,6 +70,11 @@ var resources = {
         'path': 'resources/ext-core/{version}/ext-core.jsm',
         'type': 'application/javascript'
     },
+    // Font Awesome
+    'fontawesome': {
+        'path': 'resources/fontawesome/{version}/font-awesome.min.cssm',
+        'type': 'text/css'
+    },
     // jQuery
     'jQuery': {
         'path': 'resources/jquery/latest/jquery.min.jsm',

modules/internal/helpers.js

@@ -203,6 +203,8 @@ helpers.determineResourceName = function (filename) {
         return 'Ember.js';
     case 'ext-core.jsm':
         return 'Ext Core';
+    case 'font-awesome.min.cssm':
+        return 'Font Awesome';
     case 'jquery.min.jsm':
         return 'jQuery';
     case 'jquery-ui.min.jsm':