trimming and passing check

[vjcitn]

I have forked the package and will remove the merfish.zarr from extdata. I will issue a PR once I have introduced a function that retrieves the necessary data from Bioc Open Storage Network and caches it in BiocFileCache.

I will not PR until the package is passing check, but I hope that can happen soon.

[vjcitn]

I would propose that we avoid including all but the smallest demonstration data elements to our packages. The alabaster/gypsum APIs should be looked at for achieving language-agnostic data repositories, but we are not at a point where it is clear how to adopt them.

[HelenaLC]

Agreed. The idea is to instead include examples from here, however, I am awaiting these to be updated. Alternatively, once we have something functional, we could mock up & write out minimal example data, because it still would be nice to include a www-independent example, I think.

[vjcitn]

I have a bucket already set up. We can use it until we decide on a canonical longer-term solution.