[netcdfgroup] HDFql 2.2.0 Release

We are happy to announce the release of HDFql 2.2.0!

This version includes:

- Added support for compound datasets/attributes - thanks to James (ANSTO, Australia), Stuart (Brookhaven National Laboratory, USA), Igor (SCHOTT, Switzerland), Katy (CEA, France), Joshua (Idaho National Laboratory, USA) and Lucas (IBM, USA) for the feedback

- Added support for enumeration datasets/attributes

- Added fixes for many issues

- Updated reference manual

(Please check the release notes for further details)

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