ENH: Allow multichannel input

[richford]

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Summary

This PR adds support for multichannel input in get_dataset and all necessary supporting functions. It also adds support for remote storage using fsspec.

I wrote this mainly for my own use but I think it might be more broadly useful upstream as well, provided we can align it with the vision of the main nobrainer devs.

Checklist

• I have added tests to cover my changes
• I have updated documentation (if necessary)

Acknowledgment

• I acknowledge that this contribution will be available under the Apache 2 license.

[richford]

Resolves #176

[Aakanksha-Rana]

Thanks @richford. I will review this. Could you please add tests for these added functionalities?

[richford]

Hi @Aakanksha-Rana, thanks! I added some tests for volume.py and io.py. I'll add further tests for the added functionality in transform.py and datasets.py later (probably next week). I also added tests for the pre-existing functions in volume.py.

[richford]

Hi @Aakanksha-Rana, I just added remaining tests for transform.py and dataset.py. I think this is ready for review.

Also, I added myself to "contributors" in .zenodo.json. I know different projects like to include code contributors in .zenodo.json in different places (e.g. in "contributors" vs "creators") but I wasn't sure what the nobrainer convention is. If you'd like me to move the entry into "creators" or use a type other than "Researcher", just let me know and I'm happy to make the change.

[Aakanksha-Rana]

Thanks @richford