v7.0.4 notes

docs/release_notes.rst

@@ -13,6 +13,16 @@ Note that it is licensed under GPLv3, so scripts that ``import ocrmypdf`` and ar
    find:    [^`]\#([0-9]{1,3})[^0-9]
    replace: `#$1 <https://github.com/jbarlow83/OCRmyPDF/issues/$1>`_
 
+v7.0.4
+------
+
+-   Fix exception thrown when trying to optimize a certain type of PNG embedded
+in a PDF with the ``-O2``
+
+-   Update to pikepdf 0.3.2, to gain support for optimizing some additional
+image types that were previously excluded from optimization (CMYK and grayscale).
+Fixes `#285 <https://github.com/jbarlow83/OCRmyPDF/issues/285>`_.
+
 v7.0.3
 ------