1) Calculation speed improvements.
2) HITRAN files may now be stored and accessed in a binary format for faster read times and calculations.
3) Kielkopf algorithm in the notation given by Schreier (http://www.bytran.org/kielkopf.htm) for the calculation of the Voigt profile was added for fast low accuracy estimates.
4) The downloaded HITRAN data, the calculation results, and the configuration file may now be optionally stored on an external SD card as opposed to the internal storage.