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Added release notes for #3540 [ci skip]

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Andrew Murray 2019-01-06 16:00:51 +11:00
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docs/releasenotes/5.4.1.rst
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@ -25,3 +25,12 @@ 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".
File Closing
^^^^^^^^^^^^
A regression caused an unsupported image file to report a
``ValueError: seek of closed file`` exception instead of an ``OSError``. This
has been fixed by ensuring that image plugins only close their internal `__fp`
if they are not the same as ImageFile's `fp`, allowing each to manage their own
file pointers.