Merge branch 'release/2.2.1'

.htaccess

@@ -35,4 +35,5 @@ FileETag None
     Header set X-XSS-Protection "1; mode=block"
     Header set Referrer-Policy no-referrer
     Header set Content-Security-Policy "default-src 'self'; object-src 'none'; script-src 'none'; style-src 'self' 'unsafe-inline'; img-src http:"
+    Header add Link "</css/fonts.css>; rel=preload, </css/style.css>; rel=preload" "expr=%{CONTENT_TYPE} =~ m#text/html#"
 </ifmodule>

RoboFile.php

@@ -51,6 +51,7 @@ class RoboFile extends Tasks
             ->add('templates_c/')
             ->add('classes')
             ->add('controllers')
+            ->add('css')
             ->add('i18n');
 
         foreach ($finder as $file) {