Dataclass-wizard

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**Bugfixes**

* Fix an import issue with the ``wiz`` CLI tool.

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**Features and Improvements**

* Add new ``wiz`` companion CLI utility
* Add a CLI sub-command ``gs`` to generate the dataclass schema for a JSON
file or string input.

**Bugfixes**

* The key transform functions now correctly work when the JSON keys contain
spaces. For example, a field named "the number 42" should now be correctly
parsed as ``the_number_42`` when the key transformer is :func:`to_snake_case`.

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* Support the ``deque`` type in the JSON load and dump process,
as well as its equivalent in the ``typing`` module.
* Add ``__slots__`` where possible to classes, to help reduce the overall memory
footprint.
* Slightly changed the order of constructor arguments to most ``Parser`` implementations.
* Rename the ``type_check`` utils module to ``typing_compat``, as I think this name
makes it clearer as to its purpose.
* Rename a few internal functions, such as ``BaseJSONWizardMeta._safe_as_enum``
-> ``BaseJSONWizardMeta._as_enum_safe``
* Add benchmark tests against a few other libraries

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* Support ``set`` and ``frozenset`` types in the JSON load and dump process,
as well as their equivalents in the ``typing`` module.
* Support custom JSON key mappings for dataclass fields.
* Add new exported helper functions:
- ``json_field``: This can be thought of as an alias to ``dataclasses.field(...)``,
but one which also represents a mapping of one or more JSON key names to a
dataclass field.
- ``json_key``: Represents a mapping of one or more JSON key names for a
dataclass field.
* Add an optional attribute ``json_key_to_field`` to ``JSONSerializable.Meta``
* Rename ``ListParser`` to ``IterableParser``, since this parser will also be
used for Set types.
* Update the ``__call__`` method of the default ``Parser`` to raise a ``ParseError``,
so we can provide a more helpful error message when an unknown or unsupported type
annotation is encountered.

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**Bugfixes**

* The ``property_wizard`` metaclass should now correctly handle cases when field
properties are annotated as a standard mutable type (``list``, ``dict``,
or ``set``).
* The ``property_wizard`` metaclass should now also honor the ``default_factory``
argument to a dataclass *field* object as expected.
* Resolved an issue where in some cases the JSON load/dump process failed when
Python 3.8+ users imported ``TypedDict`` from ``typing`` instead of the
``typing_extensions`` module. Now it should correctly work regardless of which
version of ``TypedDict`` is used. This is especially important because of
`an issue with TypedDict`_ that is present in Python 3.8.

.. _an issue with TypedDict: https://bugs.python.org/issue38834

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**Features and Improvements**

* ``JSONSerializable`` now supports dataclass fields with an `Annotated`_ type.
* The ``property_wizard`` metaclass has been (similarly) updated to support
`Annotated` field properties; such types can be resolved by
making a call to ``typing.get_type_hints`` with the argument ``include_extras=True``.
* Support for adding global JSON load/dump settings, e.g. when ``JSONSerializable.Meta`` is defined
as an outer class.
* Add proper source attributions, and apply the LICENSE and any NOTICE (if applicable) from
the sources.
* Update comments in code to clarify or elaborate where
needed.
* Update Sphinx docs/

**Bugfixes**

* When ``JSONSerializable.Meta`` is defined as an inner class - which is the most common
scenario - it should now be correctly applied per-class, rather than mutating
the load/dump process for other dataclasses that don't define their own inner ``Meta`` class.
* When logging a message if a JSON key is missing from a dataclass schema, the dataclass
name is now also included in the message.

.. _Annotated: https://docs.python.org/3.9/library/typing.html#typing.Annotated