2.83.6
add OpenCL PairBench (missing GUI, so not really useful)
fix some out-of-bounds error in the OpenCL rigid body pipeline re-enable an OpenCL/gpu rigid body example (box-box stack)
fix an issue with btMultiBodyConstraint, automatically 'finalizeMultiDof' to pre-allocate jacobian data enable joint limit for slider/prismatic joint in btMultiBody version of URDF loader