*****************************
UG-ANTS 0.4.0 (December 2025)
*****************************

This release is primarily driven by migration to
`GitHub <https://github.com/MetOffice/UG-ANTS>`_.
For a full list of changes see the :milestone:`0.4.0 release milestone <1>`.

.. important::
  The Contributor Licence Agreement (CLA) has been updated (:pr:`40`).
  All contributors must re-sign the CLA, see :ref:`contribute`.

Features
========
- :pr:`34`: The ``fix_mask`` function has been ported from ANTS to UG-ANTS as
  :func:`ugants.utils.cube.align_mask`.
- :pr:`32`: ``ugants.tests.stock.regular_grid_global_cube`` now has a geodetic
  coordinate system.

Bugs Fixed
==========

Incompatible Changes
====================
- :pr:`5`: The rose stem test workflow is now run via the ``cylc vip`` command,
  rather than the ``rose stem`` command. See :doc:`/how_to/rose_stem_how_to`.

Infrastructure
==============
- :pr:`7`: Unit tests are run with GitHub Actions as part of continuous
  integration (CI).
- :pr:`12` and :pr:`13`: Documentation is built with GitHub Actions as part of continuous
  integration (CI).
- :pr:`9`: `pre-commit <https://pre-commit.com/>`_ hooks are now supported in
  UG-ANTS.
- :pr:`30`: `setuptools-scm <https://setuptools-scm.readthedocs.io/en/latest/>`_
  is now used to set the version number automatically from git metadata.

Documentation
=============