feat(attributes): warn when writing attributes that are not valid JSON - #4400

feat(attributes): warn when writing attributes that are not valid JSON#4400

d-v-b wants to merge 3 commits into

zarr-developers:mainzarr-developers/zarr-python:mainfrom

d-v-b:fix/attributes-json-deprecationd-v-b/zarr-python:fix/attributes-json-deprecationCopy head branch name to clipboard