Core (LV::Bin): Always use timed morphs
Core (LV::Bin): Input and actor must now be set by name
Core (VisActor, VisMorph): visual_actor_realize() and visual_morph_realize() now return error values like visual_input_realize()
Core (VisActor): Rewrite documentation
Core (Visinput, VisMorph, VisPlugin): Minor edits to documentation