DOC: Add whatsnew entry for v0.23

docs/source/whatsnew/index.rst

@@ -14,6 +14,7 @@ Versions
 .. toctree::
    :maxdepth: 2
 
+   v0.23
    v0.22
    v0.21
    v0.20

docs/source/whatsnew/v0.23.rst

@@ -0,0 +1,50 @@
+Version 0.23 (March XX, 2024)
+=============================
+
+Cartopy has been relicensed from LBPL-3 to BSD-3-Clause. All contributions
+to Cartopy are now under the BSD-3-Clause license.
+
+There has been several updates to the geometry and feature handling,
+making these more compatible with the Matplotlib semantics.
+
+Features
+--------
+
+* Xianxiang Li added the ability to modify the properties of the stock images (:pull:`2230`)
+
+* @lgolston updated the shapefile readers and added documentation. (:pull:`2236`)
+
+* Ruth Comer turned the GridLiner into a matplotlib Artist making it easier to
+  add and remove gridlines and fewer internal draws for better performance. (:pull:`2249`, :pull:`2252`)
+
+* The Stamen Maps API is no longer available. There is a new class StadiaMaps
+  that can be used to access the Stadia Maps API which contains the
+  Stamen styled tiles. (:pull:`2269`)
+
+* Greg Lucas made it easier to handle projections on non-earth bodies that
+  would error previously. (:pull:`2283`)
+
+* Kevin Dungs added the ability to use Levels 5 and 6 in GSHHS features
+  for Antarctica. (:pull:`2317`)
+
+* Ruth Comer changed a single geometry that is split into two across a boundary
+  to be drawn as a compound path rather than two independent paths. This makes
+  it easier to style the geometry consistently. (:pull:`2325`)
+
+* Ruth Comer has converted the ``FeatureArtist`` into a Matplotlib ``Collection``.
+  This makes it easier to set properties on the features and enables arrays to
+  be used to style a set of features. (:pull:`2323`)
+  A new example demonstrating this has been added to the gallery
+  :ref:`sphx_glr_gallery_scalar_data_geometry_data.py`
+
+Deprecations and maintenance
+----------------------------
+
+* The minimum supported version of Matplotlib is v3.5.
+* The minimum supported version of pyshp is v2.3.
+* The ``cartopy.mpl.style`` module has been deprecated with no replacement
+  and will be removed in a future release. Users should combine and merge styles
+  themselves now.
+* The **auto_update** keyword argument to ``gridlines`` and ``GridLiner`` is
+  deprecated and will be removed in a future release. In the future the gridlines
+  will always be updated when the plot is drawn.