Tinydb

^^^^^^^^^^^^^^^^^^^

- Feature: Add `map()` query operation to apply a transformation
to a document or field when evaluating a query
(see `pull request 445 <https://github.com/msiemens/tinydb/pull/445>`_).
**Note**: This may break code that queries for a field named ``map``
using the ``Query`` APIs property access syntax
- Feature: Add support for `typing-extensions <https://pypi.org/project/typing-extensions/>`_
v4
- Documentation: Fix a couple of typos in the documentation (see
`pull request 446 <https://github.com/msiemens/tinydb/pull/446>`_,
`pull request 449 <https://github.com/msiemens/tinydb/pull/449>`_ and
`pull request 453 <https://github.com/msiemens/tinydb/pull/453>`_)

^^^^^^^^^^^^^^^^^^^

- Fix: Make ``Table.delete()``'s argument priorities consistent with
other table methods. This means that if you pass both ``cond`` as
well as ``doc_ids`` to ``Table.delete()``, the latter will be preferred
(see `issue 424 <https://github.com/msiemens/tinydb/issues/424>`__)

^^^^^^^^^^^^^^^^^^^

- Fix: Correctly install ``typing-extensions`` on Python 3.7
(see `issue 413 <https://github.com/msiemens/tinydb/issues/413>`__)

^^^^^^^^^^^^^^^^^^^

- Feature: Better type hinting/IntelliSense for PyCharm, VS Code and MyPy
(see `issue 372 <https://github.com/msiemens/tinydb/issues/372>`__).
PyCharm and VS Code should work out of the box, for MyPy see
:ref:`MyPy Type Checking <mypy_type_checking>`

^^^^^^^^^^^^^^^^^^^

- Feature: Add operation for searching for all documents that match a ``dict``
fragment (see `issue 300 <https://github.com/msiemens/tinydb/issues/300>`_)
- Fix: Correctly handle queries that use fields that are also Query methods,
e.g. ``Query()['test']`` for searching for documents with a ``test`` field
(see `issue 373 <https://github.com/msiemens/tinydb/issues/373>`_)

^^^^^^^^^^^^^^^^^^^

- Feature: Add operation for updating multiple documents: ``update_multiple``
(see `issue 346 <https://github.com/msiemens/tinydb/issues/346>`_)
- Improvement: Expose type information for MyPy typechecking (PEP 561)
(see `pull request 352 <https://github.com/msiemens/tinydb/pull/352>`_)