Improved sliding windows

[schrf]

Description

replaced the drop_partial_windows argument with partial_windows, adding two new options:

1. "adaptive": adjust window sizes such that all windows have almost the exact same size
2. "split": recursively split a slide into windows such that they do not exceed a maximum number of cells defined by max_nr_cells.

The old arguments are None and drop now.

How has this been tested?

Tested using imc pancreas and visium datasets, running sliding_windows with different argument combinations and visually inspecting the windows by plotting them.

Closes

closes #908

[codecov]

Codecov Report

❌ Patch coverage is 82.85714% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 73.11%. Comparing base (240dcfe) to head (4c7d9b1).

Files with missing lines	Patch %	Lines
src/squidpy/tl/_sliding_window.py	82.85%	6 Missing and 6 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1116      +/-   ##
==========================================
+ Coverage   72.96%   73.11%   +0.15%     
==========================================
  Files          38       38              
  Lines        6484     6539      +55     
  Branches     1151     1164      +13     
==========================================
+ Hits         4731     4781      +50     
- Misses       1270     1272       +2     
- Partials      483      486       +3     

Files with missing lines	Coverage Δ
src/squidpy/tl/_sliding_window.py	81.69% <82.85%> (+5.82%)	⬆️

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[timtreis]

Hey @schrf, thank you for your contribution! Quite a lot of the changes are inconsequential (removing comments, renaming things, etc) which I'd guess are introduced by some LLM. While that's totally acceptable, I'd be great if you could clean up this PR to only touch things that are actually relevant to the new functionality you're implementing.

Thank you!

[selmanozleyen]

yes also if you could make the notebook changes in a separate PR for the notebook repo I would appreciate it

[schrf]

Hey, thanks for the feedback. I'll simplify the changes as soon as I have time. @selmanozleyen I made a pull request for the notebook, I just didn't mention it here. It is #156

[schrf]

@timtreis I cleaned up the code. Let me know what you think