Download the 0.9.1 version available in the sourceforge dedicated section. You can now use the comparison file editor to edit scenarios, you can locally launch a suite of scenarios to test... and you have a better looking report with a new style.
It seemed that the 0.8.1 zip archive available on sourceforge has recently been corrupted (many thanks to the user who noticed us), now it's fixed...
Anyway, stay tuned: the 0.9 version will be released during november ;)