Merge pull request matplotlib#27256 from ksunden/merge_up_v3.8.1

merge up v3.8.1

Author: QuLogic

doc/_static/zenodo_cache/10059757.svg

@@ -0,0 +1,33 @@
+API Changes for 3.8.1
+=====================
+
+Behaviour
+---------
+
+Default behaviour of ``hexbin`` with *C* provided requires at least 1 point
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The behaviour changed in 3.8.0 to be inclusive of *mincnt*. However, that resulted in
+errors or warnings with some reduction functions, so now the default is to require at
+least 1 point to call the reduction function. This effectively restores the default
+behaviour to match that of Matplotlib 3.7 and before.
+
+
+Deprecations
+------------
+
+Deprecations removed in ``contour``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+``contour.allsegs``, ``contour.allkinds``, and ``contour.find_nearest_contour`` are no
+longer marked for deprecation.
+
+
+Development
+-----------
+
+Minimum version of setuptools bumped to 64
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+To comply with requirements of ``setuptools_scm``, the minimum version of ``setuptools``
+has been increased from 42 to 64.

doc/api/prev_api_changes/api_changes_3.8.1.rst

@@ -194,7 +194,6 @@ config during installation ::
 For more information on installation and other configuration options, see the
 Meson Python :external+meson-python:ref:`editable installs guide <how-to-guides-editable-installs>`.
 
-
 Verify the Installation
 =======================