Allow to separate the set of markers to manage of the evaluated set of markers
It is not completely realistic to use the complete set of markers to do management, particularly in the simulation mode, as they are not always available for users.
This can be done by measuring and returning diversity parameters using all genetic markers entered by the user, as it is done now, but allowing to use a reduced sample of markers for management (eg. a fraction of the total, taking markers as separately as possible, in order to avoid linkage disequilibrium).