Log Message:
py-xarray: updated to 2024.2.0

v2024.02.0 (Feb 19, 2024)
-------------------------

This release brings size information to the text ``repr``, changes to the \ 
accepted frequency
strings, and various bug fixes.

Thanks to our 12 contributors:

Anderson Banihirwe, Deepak Cherian, Eivind Jahren, Etienne Schalk, Justus Magin, \ 
Marco Wolsza,
Mathias Hauser, Matt Savoie, Maximilian Roos, Rambaud Pierrick, Tom Nicholas

New Features
~~~~~~~~~~~~

- Added a simple ``nbytes`` representation in DataArrays and Dataset ``repr``.
  (:issue:`8690`, :pull:`8702`).
  By `Etienne Schalk <https://github.com/etienneschalk>`_.
- Allow negative frequency strings (e.g. ``"-1YE"``). These strings \ 
are for example used in
  :py:func:`date_range`, and :py:func:`cftime_range` (:pull:`8651`).
  By `Mathias Hauser <https://github.com/mathause>`_.
- Add :py:meth:`NamedArray.expand_dims`, :py:meth:`NamedArray.permute_dims` and
  :py:meth:`NamedArray.broadcast_to` (:pull:`8380`)
  By `Anderson Banihirwe <https://github.com/andersy005>`_.
- Xarray now defers to `flox's heuristics \ 
<https://flox.readthedocs.io/en/latest/implementation.html#heuristics>`_
  to set the default `method` for groupby problems. This only applies to \ 
``flox>=0.9``.
  By `Deepak Cherian <https://github.com/dcherian>`_.
- All `quantile` methods (e.g. :py:meth:`DataArray.quantile`) now use `numbagg`
  for the calculation of nanquantiles (i.e., `skipna=True`) if it is installed.
  This is currently limited to the linear interpolation method (`method='linear'`).
  (:issue:`7377`, :pull:`8684`)
  By `Marco Wolsza <https://github.com/maawoo>`_.

Breaking changes
~~~~~~~~~~~~~~~~

- :py:func:`infer_freq` always returns the frequency strings as defined in pandas 2.2
  (:issue:`8612`, :pull:`8627`).
  By `Mathias Hauser <https://github.com/mathause>`_.

Deprecations
~~~~~~~~~~~~
- The `dt.weekday_name` parameter wasn't functional on modern pandas versions \ 
and has been
  removed. (:issue:`8610`, :pull:`8664`)
  By `Sam Coleman <https://github.com/nameloCmaS>`_.

Bug fixes
~~~~~~~~~

- Fixed a regression that prevented multi-index level coordinates being \ 
serialized after resetting
  or dropping the multi-index (:issue:`8628`, :pull:`8672`).
  By `Benoit Bovy <https://github.com/benbovy>`_.
- Fix bug with broadcasting when wrapping array API-compliant classes. \ 
(:issue:`8665`, :pull:`8669`)
  By `Tom Nicholas <https://github.com/TomNicholas>`_.
- Ensure :py:meth:`DataArray.unstack` works when wrapping array API-compliant
  classes. (:issue:`8666`, :pull:`8668`)
  By `Tom Nicholas <https://github.com/TomNicholas>`_.
- Fix negative slicing of Zarr arrays without dask installed. (:issue:`8252`)
  By `Deepak Cherian <https://github.com/dcherian>`_.
- Preserve chunks when writing time-like variables to zarr by enabling lazy CF \ 
encoding of time-like
  variables (:issue:`7132`, :issue:`8230`, :issue:`8432`, :pull:`8575`).
  By `Spencer Clark <https://github.com/spencerkclark>`_ and `Mattia \ 
Almansi <https://github.com/malmans2>`_.
- Preserve chunks when writing time-like variables to zarr by enabling their \ 
lazy encoding
  (:issue:`7132`, :issue:`8230`, :issue:`8432`, :pull:`8253`, :pull:`8575`; see \ 
also discussion in
  :pull:`8253`).
  By `Spencer Clark <https://github.com/spencerkclark>`_ and `Mattia \ 
Almansi <https://github.com/malmans2>`_.
- Raise an informative error if dtype encoding of time-like variables would lead \ 
to integer overflow
  or unsafe conversion from floating point to integer values (:issue:`8542`, \ 
:pull:`8575`).
  By `Spencer Clark <https://github.com/spencerkclark>`_.
- Raise an error when unstacking a MultiIndex that has duplicates as this would \ 
lead to silent data
  loss (:issue:`7104`, :pull:`8737`).
  By `Mathias Hauser <https://github.com/mathause>`_.

Documentation
~~~~~~~~~~~~~
- Fix `variables` arg typo in `Dataset.sortby()` docstring (:issue:`8663`, \ 
:pull:`8670`)
  By `Tom Vo <https://github.com/tomvothecoder>`_.
- Fixed documentation where the use of the depreciated pandas frequency string \ 
prevented the
  documentation from being built. (:pull:`8638`)
  By `Sam Coleman <https://github.com/nameloCmaS>`_.

Internal Changes
~~~~~~~~~~~~~~~~

- ``DataArray.dt`` now raises an ``AttributeError`` rather than a ``TypeError`` \ 
when the data isn't
  datetime-like. (:issue:`8718`, :pull:`8724`)
  By `Maximilian Roos <https://github.com/max-sixty>`_.
- Move ``parallelcompat`` and ``chunk managers`` modules from ``xarray/core`` to
  ``xarray/namedarray``. (:pull:`8319`)
  By `Tom Nicholas <https://github.com/TomNicholas>`_ and `Anderson \ 
Banihirwe <https://github.com/andersy005>`_.
- Imports ``datatree`` repository and history into internal location. (:pull:`8688`)
  By `Matt Savoie <https://github.com/flamingbear>`_ and `Justus Magin \ 
<https://github.com/keewis>`_.
- Adds :py:func:`open_datatree` into ``xarray/backends`` (:pull:`8697`)
  By `Matt Savoie <https://github.com/flamingbear>`_.
- Refactor :py:meth:`xarray.core.indexing.DaskIndexingAdapter.__getitem__` to \ 
remove an unnecessary
  rewrite of the indexer key (:issue: `8377`, :pull:`8758`)