reliable zarr v3 python package

[maximedion2]

I need a reliable package to produce test data. I was using zarrita, but it's full of bugs, I just caught one where sharding with a rectangular data shape (instead of square) produces some garbage data. I thought I did something wrong in the code, but after inspecting the data directly in python, clearly it's wrong from the start. I can't test properly if I can't generate data that follows the proposed standard correctly...

[maximedion2]

Actually, I'm going to generate the test files "on-the-fly" via the rust zarrs package, that will make tests much easier to manage, and much easier to read.