* New since version libbow version 0.6. The library and its front-ends now take GNU-style long-options. For example, to see the new rainbow options, execute "./rainbow --help". NOTE: Several of the options have changed. For example, `-R' should be replaced with `-O'. WARNING: One of the options as reversed meaning! Pre-version-0.7, stemming was on by default; `-S' turned it off; now, stemming is turned off by default; `-S' will turn it on. WARNING: The data file format for models have changed. You will have to re-build any rainbow or arrow models you created with libbow version 0.6. Otherwise rainbow or arrow will crash when reading in the old models.