Bulgarian language

Hello,

I've noticed there are currently no overrides for Bulgarian characters. I've added some in the code and it works fine (all this is according the current Bulgarian standards defined by national law).
The file is x04.php and the code is as follows:

// Overrides for Bulgarian input.
$variant['bg'] = array(
  0x26 => 'TS',
  0x29 => 'SHT',
  0x2A => 'A',
  0x2C => 'Y',
  0x46 => 'ts',
  0x49 => 'sht',
  0x4A => 'a',
  0x4C => 'y',
);

I am aware this is not the right way of suggesting changes to a module but I am not familiar with the Drupal patch workflow; therefore I would like to apologize. I thought it would be useful if someone could make a patch and include it in the next release.