Fix slugify and cleanDiacritics for œ and æ

œ is converted to oe and æ to ae.

Author: jazzzz

cleanDiacritics.js

@@ -1,8 +1,8 @@
 
 var makeString = require('./helper/makeString');
 
-var from  = 'ąàáäâãåæăćčĉęèéëêĝĥìíïîĵłľńňòóöőôõðøśșşšŝťțţŭùúüűûñÿýçżźž',
-  to    = 'aaaaaaaaaccceeeeeghiiiijllnnoooooooossssstttuuuuuunyyczzz';
+var from  = 'ąàáäâãåăćčĉęèéëêĝĥìíïîĵłľńňòóöőôõðøśșşšŝťțţŭùúüűûñÿýçżźž',
+  to    = 'aaaaaaaaccceeeeeghiiiijllnnoooooooossssstttuuuuuunyyczzz';
 
 from += from.toUpperCase();
 to += to.toUpperCase();
@@ -12,6 +12,10 @@ to = to.split('');
 // for tokens requireing multitoken output
 from += 'ß';
 to.push('ss');
+from += 'œ';
+to.push('oe');
+from += 'æ';
+to.push('ae');
 
 
 module.exports = function cleanDiacritics(str) {