MCPL release 2.1.0

[tkittel]

This release brings an often-requested feature to MCPL: Statistics in the file header which are automatically combined when files are merged!

The support does not require an update of the on-disk MCPL format, but is handled as a convention for encoding the parameters as key-value pairs in comment fields in the MCPL headers, using a syntax like "stat:sum:<key>:<value>".

The various APIs (C/Python/cmdline) have been updated to provide interfaces for interacting with these data items, and all supported operations (merge/repair/extract/...) have been updated to handle such entries appropriately. For a more complete introduction of the new feature, please refer to the documentation at the https://mctools.github.io/mcpl/format_statsum/ page.

Full Changelog: v2.0.0...v2.1.0

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This discussion was created from the release MCPL release 2.1.0.