CUDASimulation::simulate(RunPlan plan)

[ptheywood]

It might be nice to provide a mechanism to run simulations using individual RunPlan objects?

There is overlap between a RunPlan and various parts of a simulations's Config object however, which would need to be clear.

I.e. how many steps would be used below:

flamegpu::CUDASimulation simulation(model);
simualtion.Config().steps=10;
RunPlan plan1(model);
plan1.setSteps(20);
RunPlan plan2(model);
simulation.simulate(); // This would do 10 steps
simulation.simulate(plan1); // This would do 20 steps.
simulation.simulate(plan2); // this would do 1 step