10.1.0
------

Backwards Incompatible Changes
==============================

Setting image mode
^^^^^^^^^^^^^^^^^^

If you attempt to set the mode of an image directly, e.g.
``im.mode = "RGBA"``, you will now receive an ``AttributeError``. This is
not about removing existing functionality, but instead about raising an
explicit error to prevent later consequences. The ``convert`` method is the
correct way to change an image's mode.

Deprecations
============

TODO
^^^^

TODO

API Changes
===========

TODO
^^^^

TODO

API Additions
=============

has_transparency_data
^^^^^^^^^^^^^^^^^^^^^

Images now have :py:attr:`~PIL.Image.Image.has_transparency_data` to indicate
whether the image has transparency data, whether in the form of an alpha
channel, a palette with an alpha channel, or a "transparency" key in the
:py:attr:`~PIL.Image.Image.info` dictionary.

Even if this attribute is true, the image might still appear solid, if all of
the values shown within are opaque.

Security
========

TODO
^^^^

TODO

Other Changes
=============

Added support for DDS 8-bit color indexed images
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Support has been added to read PALETTEINDEXED8 DDS files as P mode images.

Support reading signed 8-bit YCbCr TIFF images
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

TIFF images with unsigned integer data, 8 bits per sample and a photometric
interpretation of YCbCr can now be read.