Marshmallow

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Bug fixes:

- Fix call to ``get_declared_fields``: pass ``dict_cls`` again (:issue:`2152`).
Thanks :user:`Cheaterman` for reporting.

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Features:

- Add ``absolute`` parameter to ``URL`` validator and ``Url`` field (:pr:`2123`).
Thanks :user:`sirosen` for the PR.
- Use Abstract Base Classes to define ``FieldABC`` and ``SchemaABC``
(:issue:`1449`). Thanks :user:`aditkumar72` for the PR.
- Use `OrderedSet` as default `set_class`. Schemas are now ordered by default.
(:issue:`1744`)

Bug fixes:

- Handle ``OSError`` and ``OverflowError`` in ``utils.from_timestamp`` (:pr:`2102`).
Thanks :user:`TheBigRoomXXL` for the PR.
- Fix the default inheritance of nested partial schemas (:issue:`2149`).
Thanks :user:`matejsp` for reporting.

Other changes:

- Officially support Python 3.11 (:pr:`2067`).
- Drop support for Python 3.7 (:pr:`2135`).

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Features:

- Add ``timestamp`` and ``timestamp_ms`` formats to ``fields.DateTime``
(:issue:`612`).
Thanks :user:`vgavro` for the suggestion and thanks :user:`vanHoi` for
the PR.

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Features:

- Add ``Enum`` field (:pr:`2017`) and (:pr:`2044`).

Bug fixes:

- Fix typing in ``Field._serialize`` signature (:pr:`2046`).

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Bug fixes:

- Add return type to ``fields.Email.__init__`` (:pr:`2018`).
Thanks :user:`kkirsche` for the PR.
- Add missing type hint to IPInterface __init__ (:pr:`2036`).

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Features:

- Support serialization as float in ``TimeDelta`` field (:pr:`1998`).
Thanks :user:`marcosatti` for the PR.
- Add ``messages_dict`` property to ``ValidationError`` to facilitate type checking
(:pr:`1976`).
Thanks :user:`sirosen` for the PR.