…nd docs

simple change really: we can now just rely on pyrtools.imshow / animshow
to handle the complex tensors as we want, so we remove the special
handling of them

other changes are to update docstrings and tests to be compliant with
new changes

light wrapper around pyrtools.pyrshow

still need to add tests

steerable pyramid notebook needs work in other places

…nalVision/plenoptic into complex_pyramid

works with recent changes to pyramid, adds explanation of displaying
complex tensors and using pyrshow

need to wrap steerable pyramid fixture so that its forward calls returns
a tensor

…/plenoptic

…alVision/plenoptic"

This reverts commit 5bd79c6, reversing
changes made to 9273d0f.

…nalVision/plenoptic into polar

…ignals.py

…/plenoptic into polar

…nalVision/plenoptic into polar

…on/plenoptic into polar

…lenoptic into polar

…lenoptic into main