Where to add max_grad_norm to KFAC optimizer. In [stable_baselines acktr.pyversion](https://github.com/hill-a/stable-baselines/blob/master/stable_baselines/acktr/acktr.py), they support max_grad_norm but I don't know where to use it.
Where to add max_grad_norm to KFAC optimizer. In stable_baselines acktr.pyversion, they support max_grad_norm but I don't know where to use it.