Support for nested zarr chunks

What's Changed

• Build mac without boost-fs in CI by @constantinpape in #191
• Fix typos found by codespell by @DimitriPapadopoulos in #192
• Fix typos by @DimitriPapadopoulos in #193
• Zarr format updates by @constantinpape in #194

New Contributors

• @DimitriPapadopoulos made their first contribution in #192

Full Changelog: 2.0.11...2.0.12