Complex data is not supported

[mmlyj]

Hi,this is elegant and convenient toolbox, but I noticed that complex data is not supported. It could be better that complex form could be implemented.

[v0lta]

This is a good point. Let's put this on the list.

[Xynonners]

same with bfloat16?

[v0lta]

`float' is difficult to provide at the moment. I ran into error messages from the PyTorch backend for the padding. For complex number support, it's probably a good idea to look at the dual-tree transform implemented at https://github.com/fbcotter/pytorch_wavelets.