Merge pull request #141 from kkirsche/patch-4

[Fix #104] Add support for `font-feature-settings`

Author: nschonni

src/css/Properties.js

@@ -309,6 +309,7 @@ var Properties = {
     "float-offset"                  : 1,
     "font"                          : 1,
     "font-family"                   : 1,
+    "font-feature-settings"         : "<feature-tag-value> | normal | inherit",
     "font-kerning"                  : "auto | normal | none | initial | inherit | unset",
     "font-size"                     : "<absolute-size> | <relative-size> | <length> | <percentage> | inherit",
     "font-size-adjust"              : "<number> | none | inherit",

src/css/ValidationTypes.js

@@ -210,6 +210,10 @@ var ValidationTypes = {
 
         "<flex-wrap>": function(part){
             return ValidationTypes.isLiteral(part, "nowrap | wrap | wrap-reverse");
+        },
+        
+        "<feature-tag-value>": function(part){
+            return (part.type == "function" && /^[A-Z0-9]{4}$/i.test(part));
         }
     },