For bug reports, please follow the template below. For enhancement proposals, feel free to use whatever template makes sense (major new features should be discussed in the Zarr specifications repository https://github.com/zarr-developers/zarr-specs).

# Your code here

Explain why the current behavior is a problem, what the expected output/behaviour is, and why the expected output/behaviour is a better solution.

Please provide the following:

• Value of zarr.__version__
• Value of numcodecs.__version__
• Version of Python interpreter
• Operating system (Linux/Windows/Mac)
• How Zarr was installed (e.g., "using pip into virtual environment", or "using conda")

Also, if you think it might be relevant, please provide the output from pip freeze or conda env export depending on which was used to install Zarr.