Add 5.4.1 release notes

docs/releasenotes/5.4.1.rst

@@ -0,0 +1,27 @@
+5.4.1
+-----
+
+This release fixes regressions in 5.4.0.
+
+Installation on Termux
+^^^^^^^^^^^^^^^^^^^^^^
+
+A change to the way Pillow detects libraries during installed prevented
+installation on Termux, which does not have ``/sbin/ldconfig``. This is now
+fixed.
+
+PNG: Handle IDAT chunks after image end
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Some PNG images have multiple IDAT chunks. In some cases, Pillow will stop
+reading image data before the IDAT chunks finish. A regression caused an
+``EOFError`` exception when previously there was none. This is now fixed, and
+file reading continues in case there are subsequent text chunks.
+
+PNG: MIME type
+^^^^^^^^^^^^^^
+
+The addition of limited APNG support to the PNG plugin also overwrote the MIME
+type for PNG files, causing "image/apng" to be returned as the MIME type of
+both APNG and PNG files. This has been fixed so the MIME type of PNG files is
+"image/png".

docs/releasenotes/index.rst

@@ -6,6 +6,7 @@ Release Notes
 .. toctree::
   :maxdepth: 2
 
+  5.4.1
   5.4.0
   5.3.0
   5.2.0