Helper function that will retrieve the forcing parameters that were used in an Rsim scenario
get.rsim.forcing(Rsim.scenario)Scenario object that contains all of the rsim rates and
forcing functions generated by rsim.scenario.
Returns an Rsim.forcing object.
Other Get functions:
get.rsim.fishing(),
get.rsim.params(),
get.rsim.stanzas(),
get.rsim.start_state()