- All2AllIterative: Use PropagateDownwind WS_eff as initial guess, determine unstable flow cases and limit WS_eff of idling WT in unstable flow cases to max previuos WS_eff
- Apply rotor average model on blockage deficit
- Speed up Rathmann and SelfSemilarity by implementing calc_layout_terms etc.

before default rotor center was shared among wind farm models, i.e. wakedeficit model of last instance was applied to all instances