Performance

- Added a shortcut test that speeds up the decode process for most cases.

src/util.cpp

@@ -515,6 +515,8 @@ const std::string encode (const std::string& value)
 //   ]  <- &close;
 //   :  <- &colon;
 const std::string decode (const std::string& value)
+{
+  if (value.find ('&') != std::string::npos)
   {
     std::string modified = value;
 
@@ -534,6 +536,9 @@ const std::string decode (const std::string& value)
     return modified;
   }
 
+  return value;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Escapes any unescaped character of type c within the given string
 // e.g. ' ' -> '\ '