Log Message:
Update to 0.12.0:
- Fix AI level bug caused by i18n enabling.
- Online help added.
- Random game added.
- Position of Main window, Pattern Evaluation and Game History windows
  are remembered.  Windows are opened automatically based on the
  previous run.
- Fix several problems in parity evaluator.
- Fix game searching problem.  Hashing across move is disabled.  This
  slows down winning move and end game searching but gets correct result.
- Fix problems with pattern score and open book generation.
- Black AI first move is no longer fixed to C4.