Add font-loading-3.vim

See also: http://www.w3.org/TR/css-font-loading-3/

after/syntax/css/css-font-loading-3.vim

@@ -0,0 +1 @@
+" N/A

test/test.css

@@ -190,6 +190,10 @@
   flex-basis: main-size;
 }
 
+.font-loading-3 {
+  display: auto;
+}
+
 .fonts {
   font-feature-settings: common-ligatures;
   font-kerning: no-common-ligatures;

test/test.html

@@ -217,6 +217,11 @@
 }
 </style>
 <style>
+.font-loading-3 {
+  display: auto;
+}
+</style>
+<style>
 .fonts {
   font-feature-settings: common-ligatures;
   font-kerning: no-common-ligatures;