Add parameters to GeometricJointUniqueProperties constructor for initial positions and velocities
Add parameters to GeometricJointUniqueProperties constructor for initial positions and velocities

dartsim/dart,axeisghost/DART6motionBlur,dartsim/dart,dartsim/dart,axeisghost/DART6motionBlur,dartsim/dart,dartsim/dart,axeisghost/DART6motionBlur