Alouette-III: change rope code from set/getprop to stored node reference pointers
Citation: repair and improve autostart.
Alouette-III: Rope code cleanup, bugfixes and documentation
Alouette-III: Dynamics for rope dragged over ground
Alouette-III: Another round of minor fixes
Alouette-III: Fix wrong animation reference
Alouette-III: Added load damping factor to transverse rope dynamics
Alouette-III: A couple of small fixes
Alouette-III: Optionally coil rope touching the ground
Alouette-III: Some dynamics of rope dragged over ground
