1.05 2003-04-06
  * More space and speed optimizations

1.04 2001-11-23
  * More speed optimizations

1.03 2001-11-04
  * More speed optimizations
  * Added support for the dual simplex algorithm

1.02 2001-10-28
  * Added support for step-by-step mode (flag -100). Thanks to Marco
    G. Salvagno for the idea.
  * Minor speed and space optimization

1.01 2001-07-29
  * Speed optimizations
  * Better numerical stability

1.00 2001-07-28
  * Initial version