Add several MSVC optimization flags to cmake. Bump up VERSION because serialization format changed Expose btScalar& jointMaxForce, btScalar& jointMaxVelocity to 'getJointInfo2' API, add backwards compatibility to examples\Importers\ImportURDFDemo\URDFImporterInterface::getJointInfo. pybullet: expose 4 more fields to getJointInfo: jointLowerLimit/jointUpperLimit/jointMaxForce/jointMaxVelocity fix performance issue in CMD_ACTUAL_STATE_UPDATE_COMPLETED