* priority mode.
* auto-cutter.
* gompertz curve.
* elapsed time assert. (compare with past elapsed time?)
* test history chart.
  * N tests
  * N failures
  * elapsed time
* coordinattion with TestLink.
* image diff.
* failmalloc like memory test.
* more intelligent crashed reporting.
  * get the latest unfinished test and bundle it into crashed reporting.
  * CutRunContext should have multiple crashed information.
* use imagehlp.h on Windows.
* use mach-o/loader.h on Mac OS X.
* update option descriptions in README.
