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Closes: https://github.com/thu-ml/tianshou/issues/1086 ### Api Extensions - Batch received new method: `to_numpy_`. #1098 - `to_dict` in Batch supports also non-recursive conversion. #1098 - Batch `__eq__` now implemented, semantic equality check of batches is now possible. #1098 ### Breaking Changes - The method `to_numpy` in `data.utils.batch.Batch` is not in-place anymore. Instead, a new method `to_numpy_` does the conversion in-place. #1098