Encode/decode UTF-* properly

include/sardine.py

         self.plugin = module.Plugin(self.plugindata)
 
     def _format_output(self, raw):
-        suffix = "…"
-        cooked = raw
+        suffix = u'…'
+        cooked = raw.decode("utf-8")
         if self.plugindata.fmt == "plain":
             if self.plugindata.maxlen and len(raw) > self.plugindata.maxlen:
                 newlen = self.plugindata.maxlen - len(suffix)
-                cooked = raw[:newlen] + suffix
-        return cooked
+                cooked = cooked[:newlen] + suffix
+        return cooked.encode("utf-8")
 
     def get_output(self):
         return self._format_output(self.plugin.render())