# v0.10.2

## Fixes

- Fixed segfault when overwriting the pikepdf file that is currently open on Linux.

- Fixed removal of an attribute metadata value when values were present on the same node.

# v0.10.1

## Fixes

- Avoid canonical XML since it is apparently too strict for XMP.

# v0.10.0

## Fixes

- Fixed several issues related to generating XMP metadata that passed veraPDF validation.

- Fixed a random test suite failure for very large negative integers.

- The lxml library is now required.

# v0.9.2

## Fixes

- Added all of the commonly used XML namespaces to XMP metadata handling, so we are less likely to name something ‘ns1’, etc.

- Skip a test that fails on Windows.

- Fixed build errors in documentation.

# v0.9.1

## Fixes

- Fix `Object.write()` accepting positional arguments it wouldn’t use

- Fix handling of XMP data with timezones (or missing timezone information) in a few cases

- Fix generation of XMP with invalid XML characters if the invalid characters were inside a non-scalar object

# v0.9.0

## Updates

- New API to access and edit PDF metadata and make consistent edits to the new and old style of PDF metadata.

- 32-bit binary wheels are now available for Windows

- PDFs can now be saved in QPDF’s “qdf” mode

- The Python package defusedxml is now required

- The Python package python-xmp-toolkit and its dependency libexempi are suggested for testing, but not required

## Fixes

- Fixed handling of filenames that contain multibyte characters on non-UTF-8 systems

## Breaking

- The `Pdf.metadata` property was removed, and replaced with the new metadata API

- `Pdf.attach()` has been removed, because the interface as implemented had no way to deal with existing attachments.

# v0.3.7

- Add API for inline images to unparse themselves

# v0.3.6

- Performance of reading files from memory improved to avoid unnecessary copies.

- It is finally possible to use `for key in pdfobj` to iterate contents of PDF Dictionary, Stream and Array objects. Generally these objects behave more like Python containers should now.

- Package API declared beta.

# v0.3.5

## Breaking

- `Pdf.save(...stream_data_mode=...)` has been dropped in favor of the newer `compress_streams=` and `stream_decode_level` parameters.

## Fixes

- A use-after-free memory error that caused occasional segfaults and “QPDFFakeName” errors when opening from stream objects has been resolved.

# v0.3.4

## Updates

- pybind11 vendoring has ended now that v2.2.4 has been released

# v0.3.3

## Breaking

- libqpdf 8.2.1 is now required

## Updates

- Improved support for working with JPEG2000 images in PDFs

- Added progress callback for saving files, `Pdf.save(..., progress=)`

- Updated pybind11 subtree

## Fixes

- `del obj.AttributeName` was not implemented. The attribute interface is now consistent

- Deleting named attributes now defers to the attribute dictionary for Stream objects, as get/set do

- Fixed handling of JPEG2000 images where metadata must be retrieved from the file

# v0.3.2

## Updates

- Added support for direct image extraction of CMYK and grayscale JPEGs, where previously only RGB (internally YUV) was supported

- `Array()` now creates an empty array properly

- The syntax `Name.Foo in Dictionary()`, e.g. `Name.XObject in page.Resources`, now works

# v0.3.1

## Breaking

- `pikepdf.open` now validates its keyword arguments properly, potentially breaking code that passed invalid arguments

- libqpdf 8.1.0 is now required - libqpdf 8.1.0 API is now used for creating Unicode strings

- If a non-existent file is opened with `pikepdf.open`, a `FileNotFoundError` is raised instead of a generic error

- We are now temporarily vendoring a copy of pybind11 since its main branch contains unreleased and important fixes for Python 3.7.

## Updates

- The syntax `Name.Thing` (e.g. `Name.DecodeParms`) is now supported as equivalent to `Name('/Thing')` and is the recommended way to refer names within a PDF

- New API `Pdf.remove_unneeded_resources()` which removes objects from each page’s resource dictionary that are not used in the page. This can be used to create smaller files.

## Fixes

- Fixed an error parsing inline images that have masks

- Fixed several instances of catching C++ exceptions by value instead of by reference

# v0.3.0

## Breaking

- Modified `Object.write` method signature to require `filter` and `decode_parms` as keyword arguments

- Implement automatic type conversion from the PDF Null type to `None`

- Removed `Object.unparse_resolved` in favor of `Object.unparse(resolved=True)`

- libqpdf 8.0.2 is now required at minimum

## Updates

- Improved IPython/Jupyter interface to directly export temporary PDFs

- Updated to qpdf 8.1.0 in wheels

- Added Python 3.7 support for Windows

- Added a number of missing options from QPDF to `Pdf.open` and `Pdf.save`

- Added ability to delete a slice of pages

- Began using Jupyter notebooks for documentation

# v0.2.2

- Added Python 3.7 support to build and test (not yet available for Windows, due to lack of availability on Appveyor)

- Removed setter API from `PdfImage` because it never worked anyway

- Improved handling of `PdfImage` with trivial palettes

# v0.2.1

- `Object.check_owner` renamed to `Object.is_owned_by`

- `Object.objgen` and `Object.get_object_id` are now public functions

- Major internal reorganization with `pikepdf.models` becoming the submodule that holds support code to ease access to PDF objects as opposed to wrapping QPDF.

# v0.2.0

- Implemented automatic type conversion for `int`, `bool` and `Decimal`, eliminating the `pikepdf.{Integer,Boolean,Real}` types. Removed a lot of associated numerical code.

Everything before v0.2.0 can be considered too old to document.