v9.6.0
======

- ``pikepdf.Object`` that are indirect objects now raise an exception on attempts
  to hash them (add to dict-type containers), since they are in fact potentially
  mutable. For now, direct objects can still be hashed, but this is likely to be
  discontinued. :issue:`647`
- Wheels are now built against qpdf 12.0.0, which should bring performance
  improvements for most workloads.
- qpdf 11.9.0 is now the minimum build requirement.
- We no longer build PyPy wheels on macOS, due to poor supporting infrastructure
  and unfixed issues. pikepdf will likely drop PyPy in its next major release.
- ``pikepdf._core._ObjectList`` no longer reports its ``repr()`` correctly on
  Windows. This issue appears to be a compiler bug in MSVC++ and has no known
  resolution, but also very minor impact.
- Updates to tooling.

v9.5.2
======

- Fixed an issue where temporary files could be left behind when using
  allow_overwriting_input=True and a SIGINT is sent while the file is being
  flushed to disk, or generally within a specific timing window.
- Fixed an issue via OCRmyPDF by replacing an invalid Document Info dictionary
  with a valid dictionary.

v9.5.1
======

- Bump version to address sigstore build issues.
- Pillow dropped PyPy 3.9 so we're dropping it too.

v9.5.0
======

- Created setter for Outline management to make manipulating outlines easier.
  Thanks @Zhongheng-Cheng for this contribution. :issue:`636`
- pikepdf now sets XMP properties as subelements instead of inline properties,
  in line with the XMP specification. Thanks @federicobond. :issue:`628`
- pikepdf an issue with converting certain images to PIL. Thanks @DaveDeCaprio.
  :issue:`632`
- Added a new ``pikepdf.exceptions`` module which organizes all exceptions more
  conveniently.
- pikepdf now tries harder to extract corrupt images in a PDF when they are found.
- Fixed an issue where an exception handler referred to an object not in scope,
  causing another exception. Thanks @dhazelett. :issue:`627`
- Dropped a comment about an unsupported dependency.

v9.4.2
======

- Internal type assertion error messages from qpdf that previously triggered
  a RuntimeError will now raise a PdfError. Generally these errors only occur
  in corrupted files.
- When we are updating XMP in the processing of saving, errors from updating
  XML are wrapped differently to clarify the context in which the error
  occurs.

v9.4.1
======

- Fixed a process abort in JBIG2 handling related to cleanup of Python objects
  owned by C++ code.
- Fixed inconsistent behavior when setting metadata records to an empty value.
  :issue:`622`

v9.4.0
======

- Added missing Python 3.13 wheels for a few platforms that were missing them,
  mainly ARM Linux, musllinux/Alpine, and Windows.
- Since Homebrew has ended support for macOS 12, macOS 13 is now the minimum
  requirement for Intel macOS.
- Suppressed some spurious warnings during build tests.

v9.3.0
======

- Integrated OSS Fuzz.
- Prevented generation of PDF date strings with invalid trailing apostrophes,
  while still accepting them.
- Improved error message on parsing invalid date strings.
- Dropped support for Python 3.8 (end of life October 2024).

v9.2.1
======

- Fixed some inconsistencies with the pikepdf.Rectangle class. :issue:`605`
- Python 3.13 with free-threading added to test matrix.
- Removed wheel package as build requirement since modern packing no longer
  needs it.

v9.2.0
======

- Updated C++/Python exception translation to new pybind11 2.12.0+ protocol,
  fixing possible undefined behavior in multithreaded applications.
- pybind11 2.12.0 is now required.
- qpdf 11.9.1 is now used to build wheels.
- Modernized copyright information to REUSE.toml specification.
- Added a new test file for a rare case, CCITT with EndOfLine=True. Thanks
  @ekordas. :issue:`602,601`

v9.1.2
======

- Fixed handling of CalRGB and CalGray images with palettes.
- Fixed a test suite failure when numpy 2.1 is installed. :issue:`603`
- Prevented use of setuptools 72+ since it seems to introduce build errors.
- Added a missing #include header. :issue:`600`

v9.1.1
======

- Fixed an issue where small floating point values would be recorded in
  scientific notation, contrary to the PDF specification. :issue:`598`
- Fixed some false positive warnings on Windows C++ compilers.
- Improved support for Python 3.13 pre-release.

v9.1.0
======

- Fixed a potential resource leak if we opened a file to read it as a PDF but
  it was not a valid PDF.
- When overwriting an existing PDF with ``Pdf.save()``, pikepdf now attempts to
  retain the original file permissions and ownership.
- Fixed missing return type for PageList.Extend. :issue:`592`
- Fixed exception if ``jbig2dec --version`` exists but valids to return a
  version number.
- Fixed tests on Python 3.13 pre-release. Thanks @QuLogic.
- Changed all references of "QPDF" to "qpdf", its new spelling. Thanks @m-holger.

v9.0.0
======

- Removed deprecated pikepdf.PdfMatrix. Use pikepdf.Matrix instead.
- Removed deprecated pikepdf._qpdf submodule.
- Pdf.pages no longer coerces PDF dictionaries to page objects. You must
  explicitly insert/add pikepdf.Page objects.
- pikepdf.Object.parse() no longer accepts string input; only bytes are allowed.
- macOS 12 is our minimum supported version for x86_64, and macos 14 is our
  minimum supported version for ARM64/Apple Silicon. v8 accidentally
  ended support for older versions at some point - this change is formalizing that.
  Efforts were made to continue support for older verions, but it is not sustainable.
- We now generate binary wheels for musllinux-aarch64 (Alpine ARM64).
