Add support for excluded days in repeating events

lib/event.js

@@ -346,6 +346,21 @@ var ICalEvent = function(_data, calendar) {
             });
         }
 
+        if(repeating.exclude) {
+            if(!Array.isArray(repeating.exclude)) {
+                repeating.exclude = [repeating.exclude];
+            }
+
+            data.repeating.exclude = [];
+            repeating.exclude.forEach(function(excludedDate) {
+                if(typeof excludedDate !== 'date') {
+                    throw '`repeating.exclude` contains invalid value `' + excludedDate + '`!';
+                }
+
+                data.repeating.excludedDate.push(excludedDate);
+            })
+        }
+
         return this;
     };
 
@@ -687,6 +702,13 @@ var ICalEvent = function(_data, calendar) {
                 g += ';BYMONTHDAY=' + data.repeating.byMonthDay.join(',');
             }
 
+            if(data.repeating.exclude) {
+                g += ';EXCLUDE=';
+                data.repeating.exclude.forEach(function(excludedDate) {
+                    g += tools.formatDate(excludedDate);
+                });
+            }
+
             g += '\r\n';
         }