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* Internal C-Blosc sources updated to 1.21.2 (they are a git submodule now).
* Many small code improvements, improved consistency and typo fixes.
Thanks to Dimitri Papadopoulos Orfanos.
* Support for Python 3.11. Support for Python 3.7 has been dropped.
Thanks to Dimitri Papadopoulos Orfanos.
* Several other fixes, mainly related with the building process, which
should be more solid now in different situations.