Converted constructors for planer state to use initializer lists instead of assignment operators.
Converted constructors for planer state to use initializer lists instead of assignment operators.

WPI-ARC/arc_utilities,UM-ARM-Lab/arc_utilities,WPI-ARC/arc_utilities,UM-ARM-Lab/arc_utilities,UM-ARM-Lab/arc_utilities,WPI-ARC/arc_utilities