Add release notes for #9394 and #9419 (#9467)

Author: hugovk

docs/releasenotes/12.2.0.rst

@@ -0,0 +1,52 @@
+12.2.0
+------
+
+Security
+========
+
+TODO
+^^^^
+
+TODO
+
+:cve:`YYYY-XXXXX`: TODO
+^^^^^^^^^^^^^^^^^^^^^^^
+
+TODO
+
+API changes
+===========
+
+Error when encoding an empty image
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Attempting to encode an image with zero width or height would previously raise
+a :py:exc:`SystemError`. That has now been changed to a :py:exc:`ValueError`.
+
+This does not add any new errors. SGI, ICNS and ICO formats are still able to
+save (0, 0) images.
+
+API additions
+=============
+
+FontFile.to_imagefont()
+^^^^^^^^^^^^^^^^^^^^^^^
+
+:py:class:`~PIL.FontFile.FontFile` instances can now be directly converted to
+:py:class:`~PIL.ImageFont.ImageFont` instances::
+
+    >>> from PIL import PcfFontFile
+    >>> with open("Tests/fonts/10x20-ISO8859-1.pcf", "rb") as fp:
+    ...   pcffont = PcfFontFile.PcfFontFile(fp)
+    ...   pcffont.to_imagefont()
+    ...
+    <PIL.ImageFont.ImageFont object at 0x10457bb80>
+
+Other changes
+=============
+
+Support reading JPEG2000 images with CMYK palettes
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+JPEG2000 images with CMYK palettes can now be read. This is the first integration of
+CMYK palettes into Pillow.

docs/releasenotes/index.rst

@@ -15,6 +15,7 @@ expected to be backported to earlier versions.
   :maxdepth: 2
 
   versioning
+  12.2.0
   12.1.1
   12.1.0
   12.0.0