Merge pull request #1390 from spectorasoftware/default-list-style-type

Using disc as default list style if the specified one doesn't exist

Author: Sub6Resources

lib/src/style.dart

@@ -656,7 +656,7 @@ enum ListStyleType {
   factory ListStyleType.fromName(String name) {
     return ListStyleType.values.firstWhere((value) {
       return name == value.counterStyle;
-    });
+    }, orElse: () => ListStyleType.disc);
   }
 }