torch-dreams v4.0.0

Updates:

• Added support for batch size>1 on a single image parameter + objective (AutoImageParam now has a new arg batch_size which defaults to 1). This would lead to higher quality visualizations with a smaller number of iterations.
• Fix unintended PytorchVersionError on torch 2.x. Thanks @matthiasgeihs 🙌

Interface change:
The input (layer_outputs) in custom objective functions is not anymore a list of tensors of shape (c, h, w). It's now a list of tensors of shape (n, c, h, w) where n = batch size. (The same applies for other shapes of intermediate layer outputs (...) -> (n, ...))

This is an example of an old v/s new objective function: