Removed the unnecessary template parameter in class template WangLandau::Parameters. Introduced a copy constructor to initialise from a Parameter class from another Wang-Landau simulation (does compile if the energy types and the histo types can be converted.)
Modified the wang landau example program to fit to the new non-template wang landau parameters.
Modified the histograms to be able to convert histograms with different, but convertible x_value_type into each other.
Merge branch 'master' of https://github.com/bkrueger/mocasinns