add possibility to set turbo false

lib/index.js

@@ -48,7 +48,7 @@ function addRelated(related, itemValues, relatedfinity) {
 function items(items, channel) {
     items.forEach(function (item) {
         let item_values = [];
-        item_values.push({_attr: {'turbo': 'true'}});
+        item_values.push({_attr: {'turbo': item.turboEnabled}});
         item_values.push({link: item.url});
 
         ifTruePush(item.turboSource, item_values, {'turbo:source': item.turboSource});
@@ -143,6 +143,7 @@ function itemData(data) {
         turboSource: data.turboSource || '',
         turboTopic: data.turboTopic || '',
         goals: data.goals || [],
+        turboEnabled: !data.turboDisabled || false,
     };
 }
 /**