Release version 0.4.0
Changelog:
- Add support for __torch_function__ to QuantTensor for supported versions of PyTorch. This finally removes the main barrier in making usage of QuantTensor more ingrained into the overall library.
- Correctly export operators that are invoked through __torch_function__ and that are invariant to quantization such as torch.nn.functional.max_pool2d in both standard ONNX and PyXIR.