Preeti to Unicode converter that preserves original formatting

Also supports Nagarik, Himalaya TT, Himalaya, Kalimati, Fontasy Himali, Fontasy Himali TT, Fontasy_Himali_ TT, Himalb, Himchuli, Kanchan, Kantipur, Mercantile, Jagahimali, PCS Nepali, Rukmini, Shreenath, Sagarmatha & Siddhi.