specify n_channels

[melonora]

This is for writing tests in napari-spatialdata where for RGB it is required to specify the number of channels.

[codecov]

Codecov Report

Merging #307 (902f7d9) into main (b2c43b9) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #307   +/-   ##
=======================================
  Coverage   90.74%   90.74%           
=======================================
  Files          36       36           
  Lines        4623     4624    +1     
=======================================
+ Hits         4195     4196    +1     
  Misses        428      428           

Impacted Files	Coverage Δ
src/spatialdata/datasets.py	100.00% <100.00%> (ø)

[melonora]

@LucaMarconato @kevinyamauchi Could one of you review this please and then release? The test for RGB in napari-spatialdata depends on it.

[kevinyamauchi]

LGTM, thanks!

@giovp , can you please take a look? I don't understand the notebook submodule diff. Why is that showing up here? Is it just saying that the notebooks repo was updated separately and those changes will be committed here now?

[giovp]

should be good but to be extra sure @melonora could you fetch and pull from the submodule and push again with the latest version? then you shouldn't have those diffs. I think we need to add that folder to gitignore to prevent this.

[kevinyamauchi]

Thanks for the update, @melonora ! The diff now looks good. I will merge now.