Open zip store from path with zip suffix

[aulemahal]

• Opening a string or Path path is redirected to ZipStore if the path has a .zip suffix.

Fixes #2831

• Add unit tests and/or doctests in docstrings
• Add docstrings and API docs for any new/modified user-facing classes and functions
• New/modified features documented in docs/user-guide/*.rst
• Changes documented as a new file in changes/
• GitHub Actions have all passed
• Test coverage is 100% (Codecov passes)

The added test is not as elegant as the other from the suite. Is there a way to get an existing zipped zarr dataset within the test suite ? Should I create another fixture instead of writing my own zarr in the test ?

[aulemahal]

I did not add anything in the user-guide/*.rst files as I didn't feel it was necessary. The docstring of open( already makes mention of this feature.

[dstansby]

Looks good! Just one minor comment, but I think worth fixing 👍

[aulemahal]

Hi @dstansby , I'm not sure, but it seems your suggested change that worked in march now breaks the tests. Did some assumptions change about mode=None ?