Nano-utils

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* Fixed a bug with ``split_dict()``.

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* Added the ``disgard_keys`` argument to ``split_dict()``.

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* Added the ``SetAttr`` context manager.
* Updated the development status from alpha to beta.

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* Added new NumPy-specific functions: ``as_nd_array()``, ``array_combinations()`` & ``fill_diagonal_blocks()``.
* Expanded the ``typing_utils`` module with a number of, previously missing, objects.
* Added the ``EMPTY_CONTAINER`` constaint.
* Added the ``VersionInfo`` namedtuple and the ``raise_if()`` & ``split_dict()`` functions.
* Added the ``version_info`` attribute to the package.

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* Updated the badges.
* Added a GitHub Actions workflow for automatic PyPi publishing.

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* First release.
* Introduced of four new modules: ``empty``, ``schema``,
``typing_utils`` and ``utils``.


[Unreleased]
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* Empty Python project directory structure.