- Batch: do not raise error when it finds list of np.array with different shape[0]. - Venv's obs: add try...except block for np.stack(obs_list) - remove venv.__del__ since it is buggy
- Batch: do not raise error when it finds list of np.array with different shape[0]. - Venv's obs: add try...except block for np.stack(obs_list) - remove venv.__del__ since it is buggy