Massive update of the code. Changelog.txt contains an overview of the 
most important changes. In short, the core of the workbench has 
been re-implemented to reduce the memory footprint. The functionality
of the ensemble has been expanded. Performing experiments can now
be done both over the union and the intersection of the uncertainties
and outcomes of multiple models. Moreover, functionality for (multi-
objective) optimization and (multi-objective) robust optimization
have been added. 

Docs contains the latest version of the html documentation. Hopefully,
soon, the online version will also be updated.