expose pybullet.changeDynamics(sleepThreshold), default 0.05, for both useMaximalCoordinates=False and True
When the dot(vel,vel) < sleepThreshold for longer than 2 seconds (this timeout is hard coded) objects that have the ACTIVATION_STATE_ENABLE_SLEEPING enabled with be deactivated
Example:
p.changeDynamics(ob, -1, activationState=p.ACTIVATION_STATE_ENABLE_SLEEPING, sleepThreshold=0.05)