Changes in version 0.4.0.9000                      

  - Hierarchy can now also be printed from any group. Arrays from domain
    packages may use alternative glyphs.

                 Changes in version 0.4.0 (2026-05-28)                  

  - Reading of sharded Zarr stores is now supported.
  - The Zarr-registered "string" data type, an extension to the core
    specification, is now supported. This uses the "vlen-utf8" codec,
    also a registered extension to the core specification. For Zarr v.2
    stores, this corresponds to the "|O" data type; the "<U*" data type
    is also supported, using a mocked-up "ucs-4" codec (it is not a true
    codec or Zarr v.2 filter) to provide the mandatory "array -> bytes"
    codec. This means that you can now read Zarr arrays that have
    character data. You can also create new Zarr arrays with character
    data.
  - Nested attributes print better to the console.
  - zarr_conventions() function returns data.frame of supported
    conventions.
  - Ref convention code updated.
  - Malformed "NaN", "Infinity" and "-Infinity" in metadata solved.
  - Better testing of fill values.
  - Fixed deeply nested consolidated metadata.
  - Fixed handling of scalar arrays.
  - R dependency bumped to 4.2
  - Using Rcpp for performance bottlenecks, using future for optional
    parallel processing of chunks and shards.

                 Changes in version 0.3.0 (2026-04-18)                  

  - Extensible domain and convention mechanisms added, following
    ZEP0004. This enables developers to extend this Zarr implementation
    with domain-specific interfaces.
  - Metadata is now writable as a complete object - expert use only.
  - Fixed listing of keys in memory stores.
  - Expanded documentation.

                 Changes in version 0.2.0 (2026-02-11)                  

  - Zarr version 2 stores can be read. Data types supported are those
    also included in the v.3 core specification. The compression codec
    has to be one of those supported by the v.3 core specification or
    zstd. Filters are not yet supported.
  - HTTP stores can be read but only for Zarr v.3 and v.2 single-array
    stores and Zarr v.2 stores with consolidated metadata present in the
    root group of the Zarr store.
  - Chunk key encoding from v.2 and "default" and "v2" from v.3
    supported.
  - The blosc package is now imported as it is the default compression
    codec.
  - zstd compression codec added.
  - Fixed reading integer64 data.

                 Changes in version 0.1.1 (2025-12-06)                  

  - Initial code base. This release contains a fairly complete
    implementation of the Zarr core v.3 specification. As such, it will
    not be able to access Zarr v.2 stores.
  - Support for adding and deleting attributes to groups and arrays.