## Version 1.1.0
- `OpenSSLInternal`: Fixed potential double-free in `compute_hash_to_sign()`, [GHSA](https://github.com/podofo/podofo/security/advisories/GHSA-8fq6-rqpv-xq72)
- PoDoFo is now licensed under the LGPLv2+ or MPL-2.0 license terms
- Added support for ECDSA signing
- Added resumable signing context feature with functions `PdfSigningContext::DumpInPlace()` and `PdfSigningContext::Restore()`
- Added `PdfXMPPAcket::PruneAndValidate(pdfaLevel)` for XMP validation
- PdfParser: Try to rebuild the index if cross reference sections parsing fails
- Added initial support for several raw images with /BitsPerComponent != 8
- Added support for updating/signing files with data offset before `%PDF-` magic
- Added support for updating/signing files with broken XRef sections
- Added support for devendoring 3rd party dependencies
- AFDKO: Integration made optional (still enabled by default)
- Added support for PEM encoded X509 certificate loading
- Fixed AESV3 permission encryption
- Improved `PdfPainter` exception-safety for text drawing and XObject operations
- Improved `FillXObjectFromPage` to copy `/Group` dictionary, preserving transparency
- Improved `PdfFont` subsetting to include `/ToUnicode` maps
- Improved `PdfSignature` with `SetCreatingApplication()` and `SetCreationApplication()`
- Fixed `std::terminate` on malformed XRef stream during document load
- Fixed `PdfXObjectForm` incorrect `BBox` and `Matrix` for rotated source pages
- Fixed painting to the same page more than twice
- Fixed several memory leaks in CMS signing and AFDKO wrapper
- Fixed retrieval of document keyword list
- Fixed retrieval of font metrics ascent/descent in FreeType
- Fixed various infinite loops and UB in CMap parser and `PdfCharCodeMap`
- Fixed handling of `/Type1` and `/TrueType` standard 14 like fonts without `/FontDescriptor`
- Added support for devendoring 3rd party libraries: `date`, `fast_float`, `fmt`, `utf8cpp`, `utf8proc`, `span`
- Fixed and updated GitHub Actions workflows and 3rd party dependencies

## Version 1.0.4
- Fixed [#314](https://github.com/podofo/podofo/issues/314), [#317](https://github.com/podofo/podofo/issues/317),
  [#318](https://github.com/podofo/podofo/issues/318), [#335](https://github.com/podofo/podofo/issues/335),
  [#336](https://github.com/podofo/podofo/issues/336), [#337](https://github.com/podofo/podofo/issues/337)
- `OpenSSLInternal`: Fixed potential double-free in `compute_hash_to_sign()`, [GHSA](https://github.com/podofo/podofo/security/advisories/GHSA-8fq6-rqpv-xq72)
- CMS signing: Fixed minor/potential memory leaks
- `FillXObjectFromPage`: Copy `/Group` dictionary to preserve transparency compositing (#337)
- `PdfPainter`: Fix exception-safety for text drawing and XObject operations (#336)
- `PdfXObjectForm`: Fix incorrect `BBox` and `Matrix` for rotated source pages in `FillFromPage` (#335)
- `PdfContents`: Fixed painting to the same page more than twice (#317)
- `PdfFontMetricsObject`: Handle scalars in the widths array that are cross references
- `PdfTokenizer`: Fixed infinite loop for "Unknown" keyword
- `PdfDate`: Fixed OOB read in date parsing
- Fix CFF font subsetting leak
- `PdfEncodingMapSimple`: Fix skipping `beginbfrange` unmapped codes in `AppendToUnicodeEntries()`
- `PdfCMapEncoding`: Handle `beginbfrange` declared size bigger than actual array
- `PdfFlateFilter`: Detect error condition treated as warning during inflate
- `basedefs`: Aggressively remove offending `<Windows.h>` macros and fix `<zlib.h>` conflict (#314)
- `getCodeFromVariant`: Avoid invalid arithmetical shifts
- CMap parser: Fixed infinite loop on negative character codes
- Document keywords: Fixed retrieving doc keyword list (#318)
- `PdfParser`: Fix `std::terminate` on malformed XRef stream during document load
- `PdfFont`: Fixed `GetCharGIDInfos()` when font program subsetting is not enabled
- `PdfFontMetricsFreetype`: Fixed retrieval of ascent/descent
- `PdfCharCodeMap`: Fix UB in `PushRange` when duplicate range is at begin
- `PdfDestination`: Removed spurious check for `PdfMemDocument` in `TryCreateFromObject`
- `PdfAnnotationActionBase`: Fixed segfault in `getAction()`
- `InputStream`: Try to ignore `/FlateDecode` errors
- AFDKO: Integration made optional (still enabled by default)
- Build: Fix link issues when client links against PoDoFo and pdfium

## Version 1.0.3
- Fixed [#278](https://github.com/podofo/podofo/issues/278), [#288](https://github.com/podofo/podofo/issues/288), [#292](https://github.com/podofo/podofo/issues/292), [#290](https://github.com/podofo/podofo/issues/290), [#295](https://github.com/podofo/podofo/issues/295)
- PdfParser: Fix the /Prev offsets by adding the %PDF- magic offset
- PdfSignature: Fixed TryGetPreviousRevision()
- PdfParser: Handled all [edge cases](https://www.mail-archive.com/podofo-users@lists.sourceforge.net/msg04801.html) pdfs reported in the ML

## Version 1.0.2
- Fixed [#275](https://github.com/podofo/podofo/issues/275), [#276](https://github.com/podofo/podofo/issues/276)
- `PdfTokenizer`: Fixed free-after-use after failing to parse content while reading literal tokens
- `PdfFont`: Improved heuristic for word spacing
- `PdfDifferenceEncoding`: Fixed handling of ligatures in AGL character names
- `PdfXMPPAcket`: Make `GetDescription()` const correct
- `PdfMemDocument`: Fixed upgrade to PDF2.0 in a incremental update

## Version 1.0.1
- Fixed [#265](https://github.com/podofo/podofo/issues/265), [#264](https://github.com/podofo/podofo/issues/264)
- Fixed several issues related to use of `nullable<std::unique_ptr<T>>`
- XMP: Fixed removing extension from extension bag
- XMP: Fix double inserting pdfuaid schema
- Text extraction fixes: improved word spacing heuristic, space trimming in ligatures, text in XObject form with non identity matrix
- Fixed pkg-config for shared built library

## Version 1.0.0

- Added support for Type1, CFF and OpenType CFF font subsetting
- Added support for Type3 font subsetting (no encoding subsetting, yet)
- Implemented full "Adobe Glyph List" specification (https://github.com/adobe-type-tools/agl-specification) for text extraction and glyph selection
- Implemented full Type1, TrueType font glyph selection
- Many fixes in TrueType legacy subsetting
- Added support for PDF/UA preserving when adding annotations/form fields
- Improved PDF/A preserving (eg. when PDF/UA level is set as well in the XMP metadata)
- Added support for automatically rotating imported images drawn on a `PdfPainter`
  when a orientation is detected in the source image codec metadata. Currently supported
  on Tiff images only (Jpeg exif metadata support pending)
- Added high-level signing API, see `PdfSignerCMS` and [`TestSignature1`](https://github.com/podofo/podofo/blob/edbcb16a5b18cb20f1d0da1724639cee13608436/test/unit/SignatureTest.cpp#L37) test case
- Added support for signing encrypted documents
- Added support for preserving encryption among savings
- Removed Libidn dependency, default to AESV3R6 encryption
- Added support for predefined CMap(s) for improved CJK text extraction
- Added much better CMake [integration](https://github.com/podofo/podofo?tab=readme-ov-file#consume-podofo-from-package-managers-with-cmake)
- Added raw rectangle corners retrieval in `PdfAnnotation`, `PdfPage`
- `PdfDocument`: Added `GetFieldsIterator()`
- `PdfPage`: Added `GetFieldsIterator()`
- `PdfSignature`: Added `TryGetPreviousRevision()`
- `PdfCanvas`: Added `CopyContentsTo()`
- `FileStreamDevice` now uses again C stdio for better performance
- `PdfName`:
  * Optimized for struct size and construction from string const literal
  * Added `PdfName operator""_nm(const char*, size_t)`
- `PdfString`:
  * Optimized for struct size
  * Added `std::string&&` constructor
- `PdfVariant`: Optimized for accessing `PdfString`, `PdfName` and `PdfReference`
- Reviewed `PdfFileSpec`, `PdfAction`, `PdfDestination` API and their usage in
`PdfOutlineItem`, `PdfOutlines`, `PdfAnnotationActionBase`, `PdfAnnotationLink`, `PdfAnnotationFileAttachment`
- Reviewed `PdfExtension` API
- Reviewed `PdfNameTree`, renamed to `PdfNameTrees` and added `PdfNameTree` to pick specific trees with typed element
- Reviewed `PdfExtGState`
- Reviewed `PdfTilingPattern`, `PdfShadingPattern`, `PdfFunction`: the API now exposes the full capabilities of the PDF specification
- `PdfEncrypt` is now stateless: added `PdfEncryptContext` as a
   separate state context and used as argument in `PdfEncrypt` methods
- Set `PdfSignature` to have correct `/ByteRange` and `/Contents` after signing with `PoDoFo::SignDocument`
- Added `PdfNames` and moved all known names there from `PdfName`
- `PdfPageCollection`: Methods creating pages now takes `PdfPageSize` or default inferred size from doc
- Fixed `PdfStreamedDocument`, see #88
- Tons of API improvements (see [API-MIGRATION.md](https://github.com/podofo/podofo/blob/master/API-MIGRATION.md))
- Tons of other bug fixes

## Version 0.10.6
- Fix [#260](https://github.com/podofo/podofo/issues/260), [#278](https://github.com/podofo/podofo/issues/278),
  [#290](https://github.com/podofo/podofo/issues/290), [#295](https://github.com/podofo/podofo/issues/295),
  [#314](https://github.com/podofo/podofo/issues/314), [#317](https://github.com/podofo/podofo/issues/317),
  [#318](https://github.com/podofo/podofo/issues/318)
- `PdfFontMetricsObject`: Handle scalars in the widths array that are cross references
- `PdfEncodingMapSimple`: Fix skipping `beginbfrange` unmapped codes in `AppendToUnicodeEntries()`
- `PdfCMapEncoding`: Handle `beginbfrange` declared size bigger than actual array
- `PdfContents`: Fixed painting to the same page more than twice (#317)
- `PdfTokenizer`: Fixed infinite loop for "Unknown" keyword
- `PdfDate`: Fixed OOB read in date parsing
- `PdfXRefStreamParserObject`: Permit `/W` [1 8 2]
- `PdfMemDocument`: Fixed upgrade to PDF 2.0 in incremental updates
- `PdfIndirectObjectList`: Fixed incorrect collecting of `/Length` objects in compressed object streams
- `PdfPage`: Concatenate form XObject matrix to CTM during text extraction
- `PdfDictionary`: Small optimization in `findKey()`
- `PdfFlateFilter`: Detect error condition treated as warning during inflate
- CMap parser: Fixed infinite loop on negative character codes
- `getCodeFromVariant`: Avoid invalid arithmetical shifts
- Text operators: Fixed order of operations for `'` and `"` operators (#278)
- `charconv_compat`: Fixed support for older MacOS and newer Xcode (#290, #295, libc++ 20+)
- `basedefs`: Aggressively remove offending `<Windows.h>` macros and fix `<zlib.h>` conflict (#314)
- Document keywords: Fixed retrieving doc keyword list (#318)
- Increased minimum GCC version requirement (#260)
- Various compilation and warning fixes

## Version 0.10.5
- Fix [#191](https://github.com/podofo/podofo/issues/191), [#197](https://github.com/podofo/podofo/issues/197),
  [#201](https://github.com/podofo/podofo/issues/201), [#212](https://github.com/podofo/podofo/issues/212),
  [#233](https://github.com/podofo/podofo/issues/233), [#241](https://github.com/podofo/podofo/issues/241),
  [#251](https://github.com/podofo/podofo/issues/251), [#252](https://github.com/podofo/podofo/issues/252),
  [#253](https://github.com/podofo/podofo/issues/253)
- `PdfParser`: Fixed stack overflow parsing documents with many XRef stream updates
- `PdfFont`: Fixed `GetBoundingBox()` retrieval
- `PdfFontMetricsObject`: Fixed reading `/FontBBox`
- `PdfEncodingFactory`: Fixed parsing of limits with `/FirstChar` equals to `/LastChar`
- `PdfFontMetricsStandard14`: Fixed parsing /Widths
- `PdfMetadata`: Fixed missing init ensure for SetAuthor()
- `PdfTokenizer`: Fixed character escaping when reading strings
- `PdfPageCollection`: Fix memory leak in `RemovePageAt`
- Compilation and linking fixes in various conditions
- `PdfFontManager`: Fixed GetOrCreateFontFromBuffer stealing memory
- `PdfPageCollection`: Disable copy/assignment
- `PdfPage_TextExtraction`: Fix `decodeString` with no font
- Fix eating of non-space chars in `SplitTextAsLines`
- Fix FreeType segfault race condition
- `PdfCheckBox`: Fixed `IsChecked()`
- `PdfParser`: Unconditionally try to read XRef stream in all PDFs that don't have a cross reference section

## Version 0.10.4
- Fixes [#161](https://github.com/podofo/podofo/issues/161), [#162](https://github.com/podofo/podofo/issues/162),
[#167](https://github.com/podofo/podofo/issues/167), [#183](https://github.com/podofo/podofo/issues/183),
merges [#157](https://github.com/podofo/podofo/issues/)
- `StandardStreamDevice`: Fixed `seek()` in case of `iostream`/`fstream`
- `PdfWriter`: Fixed computing the doc identifier with a wrong buffer
- `PdfPainter`: Fix `SetCurrentMatrix()` to really update CTM
- Fixed compilation in mingw < 12
- `PdfCIDToGIDMap`: Fixed map reading
- `PdfPainter`: Fixed offset on multiline text if text is not left aligned

## Version 0.10.3
- Fixed big performance regression introduced in 0.10, see [#108](https://github.com/podofo/podofo/issues/108)
- Fixed data loss with encrypted documents, see [#99](https://github.com/podofo/podofo/issues/99)
- Fixed compilation with VS2022 >= 17.8
- Fixed compilation using libxml >= 2.12.0

## Version 0.10.2
- Security related bugfixes [#76](https://github.com/podofo/podofo/issues/76),
[#89](https://github.com/podofo/podofo/issues/89),
[#96](https://github.com/podofo/podofo/issues/96)
- Some compilation and test fixes

## Version 0.10.1
- Security bugfixes, [#66](https://github.com/podofo/podofo/issues/66), [#67](https://github.com/podofo/podofo/issues/67),
[#69](https://github.com/podofo/podofo/issues/69), [#70](https://github.com/podofo/podofo/issues/70),
[#71](https://github.com/podofo/podofo/issues/71), [#72](https://github.com/podofo/podofo/issues/72)
- Rewritten `PdfPageCollection` for performance
- `PdfCMapEncoding`: Fix parsing some invalid CMap(s) supported by Acrobat
- `PdfXRefStreamParserObject`: Fixed handling of invalid XRef stream entries
- Support compilation of the library header (not the library itself) with C++20

## Version 0.10.0
- `PdfPage`/`PdfAnnotationCollection`/`PdfAnnotation`: Now functions with
  rect input assume it to be using the canonical coordinate system
  with no rotation
- `PdfImage`: Added support for CMYK jpeg
- `PdfParser`: Cleaned `FindToken2` -> `FindTokenBackward`
- Renamed base source folder -> main
- `PdfPainter`: Revamped API, added full state inspection with current point,
  added added `PdfPainterTextContext` to handle text object operations
  Use it with `PdfPainter::Text` instance member.
  Added `PdfContentStreamOperators` low level interface for PdfPainter
- `PdfFontMetrics`: Added `FilePath`/`FaceIndex` for debugging, when available
- `PdfFont`: Renamed `GetStringLength()` overloads with
  `PdfString` to `GetEncodedStringLength()`
- `PdfFontManager`: Renamed `GetFont()` -> `SearchFont()`
  Re-Added better `GetOrCreateFont()` from file/buffer
- `PdfEncrypt`: Cleaned factory methods
- Added `PdfArray::FindAtAs()`, `PdfArray::FindAtAsSafe()`, `PdfArray::TryFindAtAs()`,
  `PdfArray::GetAtAs()`, `PdfArray::GetAtAsSafe()`, `PdfArray::TryGetAtAs()`
- Added `PdfDictionary::FindKeyAsSafe()` and `PdfDictionary::TryFindKeyAs()`
- `PdfDictionary::AddKeyIndirect`/`PdfArray::AddKeyIndirect` accepts a reference
- `PdfAnnotation`/`PdfField` API review
- `PdfDate`: Introduced `PdfDate::LocalNow()` and `PdfDate::UtcNow()`
  and default constructor is epoch time instead
- Renamed `PdfDocument::GetNameTree()` -> `GetNames()`
- `PdfObject`: Flate compress on write objects that have no filters
- `PdfMemDocument` does collect garbage by default when saving
- `PdfField`/`PdfAnntation`: Fully reworked the hierarchy
  and added proper fields ownership
- Added `PdfField::GetParent()`, `PdfField::GetChildren()`
- `PdfImage`: Cleaned/reviewed/fixed `SetData()`/`SetDataRaw()`
- Renamed `PdfPageTree` -> `PdfPageCollection`
- Added XMP metadata reading/saving. Added `PdfMetadata` class
- Added text extraction API
- Review I/O API: Merged `InputDevice`/`OutputDevice` into `StreamDevice`.
  New hierarchy deriving `StreamDevice`
- Reviewed `PdfObjectStream` API: added streaming operations,
  `GetInputStream()`, `GetOutputStream()`. Renamed
  `GetFilteredCopy()` -> `GetUnwrappedCopy()`/`UnwrapTo()`.
  They only unwrap non media filters (see `PdfImage::DecodeTo`
  for media ones). Added proper copy and move assignment operators
- `PdfImage`: Added `DecodeTo(pixelFormat)`

## Version 0.9.22 (pdfmm)
- Fixed serialization of strings with non ASCII `PdfDocEncoding`
  characters
- Removed `PdfLocaleImbue`
- `PdfEncrypt`: Removed `PdfReference` state. Added `PdfStatefulEncrypt`
- Removed use of `std::ostringstream`. Added efficient `outstringstream`
- Added `PdfMath` functionalities (matrix transformations and so on)

## Version 0.9.21 (pdfmm)
- Fixed serialization of UTF-16BE strings
- More lenient `PdfDate` parsing

## Version 0.9.20 (pdfmm)

- The project is now a C++17 library
- Added move semantics for `PdfVariant`, `PdfObject`, `PdfArray`, `PdfDictionary`
- Improved XRefStream support, added support in incremental saves
- Many fixes in save incremental object/generation number incrementing
- `PdfString` backed with UTF-8 storage
- `PdfName` backed with UTF-8 storage
- Brand new P`dfEncoding` class with support for both `/Encoding` and `/ToUnicode`,
  more complete Unicode support
- Added a `PdfDynamicEncoding` class that creates a custom CID encoding
  based on actual used glyphs used
- Automatic creation of CIDMap and `/ToUnicode`
- Added `PdfSigner` class and `SignDocument()`
- Added `PdfFontType1Encoding`, which support Type1 implicit encoding
- Added support for PDF 2.0 UTF-8 strings (untested)
- Added indirect iteration for `PdfArray`/`PdfDictionary` (see `GetIndirectIterator` methods)
- Added `PdfDocument::GetPdfALevel()`
- Added PDFA preserving writing
- Refactored/Reviewed `PdfInputDevice`: versions that take buffer
  do not copy it (use `istringviewstream`)
- Added font replacement facility `PdfFont::TryCreateFontSubstitute()`
- Added standard14 fonts embedding, with font programs from PDFium
- Reviewed `PdfXObject` hierarchy, added `PdfXObjectForm`, `PdfXObjectPostScript`
- Added `PdfTextState` and use it to compute string widths in `PdfFont`
- Improved `PdfDocEncoding` to expose conversion utf8 conversion facilities
- `PdfParser`: Support also files with whitespace offset before magic start
- `PdfObject` auto ownership
- `PdfContents`: create on demand /Contents. First create a single stream, after array
- Improved `IsDirty` handling: less dirty bit sets
- Added `PdfPostScriptTokenizer` that as better general support for PostScript
- `PdfDictionary`: Reviewed/convert `GetKey` -> `FindKey`
- `PdfDictionary`: Reviewed `GetKeyAs` methods
- Fixed hundreds of warnings. No warnings left in tested builds
- `FontConfigManager`: better handling with custom configurations
- Removed `PdfMutex`. Used `std::mutex` where necessary
- Datatypte: removed `PdfDataType::HexString`
- Removed support for old compilers (MSVC6, hpux, borland, turbo...)
- Added better endian swap functions
- Removed `auto_ptr` usage
- Removed `pdf_int`/`pdf_uint` types
- Removed use of `pdf_long`/`long` types
- Removed use of `ptrdiff_t`
- Removed unistring and ugly string conversion code. Moved to utfcpp
- Reviewed `PdfObject::GetNumber`/`PdfObject::GetReal` (strict/lenient)
- Remove `PdfObject` inheritance on `PdfVariant`
- Reviewed `PdfVariant`/`PdfObject`/`PdfArray`/`PdfDictionary` equality/disequality operators
- Simplified copyright headers
- Object copy constructor must copy also stream
- `PdfElement`: `GetDocument()`, `GetObject()` refs
- `PdfIndirectObjectList`: `GetParentDocument()` -> `GetDocument()`
- Remove `PdfSignOutputDevice::SetSignatureSize(size)`
- Moved inline code to .cpp
- Remove comments on overrides
- Cleaned CMakeFiles (removed custom Find<>.cmake)
- `NULL` -> `nullptr`
- Use `std::shared_ptr` in `PdfFontMetrics`, `PdfEncoding` in `PdfFont`
- Cleaned `PdfFontCache` (renamed `PdfFontManager`), removed font functions from `PdfDocument`
- `PdfArray::FindAt()` return ref
- Simplified license headers
- Reviewed `PdfPageTree` and `PdfPageTreeCache` API
- Reviewed most int vs unsigned indexing
- Remove all hungarian notation
- Sanitize code style
- Removed all const char* and passed to string/string_view
- Renamed `PdfFontCache` -> `PdfFontManager`
- Renamed `PdfVecObjects` -> `PdfIndirectObjectList`
- Renamed `PdfNamesTree` -> `PdfNameTree`
- Renamed `PdfPagesTree` -> `PdfPageTree`
- Renamed `PdfPagesTreeCache` -> `PdfPageTreeCache`
- PdfObject: removed GetIndirectObject(), MustGetIndirectKey (must use PdfDictionary now)
- Remove `PdfMemoryManagement.cpp`, Removed `podofo_new`, `podofo_free`
- Add chars type for char array storage/buffering which inherits string
- Review pointer vs ref parameters/return types
- Removed `PdfRefCountedBuffer`, `PdfRefCountedInputDevice`, `PdfRefCountedOutputDevice`
- Removed `PdfMemoryManagement` and all C style malloc/free usage
- Refactored `PdfOutputDevice` (`PdfMemoryOutputDevice`/`PdfFileOutputDevice`/etc.)
- Clean `PdfError`, remove `wchar_t`
- Remove `printf`, `snprintf`
- Renamed `PdfElement`-> {`PdfDictionaryElement`|`PdfArrayElement`} that
  respectively have `GetDictionary()`, `GetArray()`
- Reviewed `PdfWriteFlags`, added `PdfSaveOptions`

## Old PoDoFo ChangeLog

Version 0.7

- Fixed `PdfPainter::ArcTo`
- Fixed crash in `FlateDecode` and `LZWDecode` predictor functions
- Fixed writing of unicode `PdfString`(s) with brackets (will be escaped
  now)
- Fixed encoding of bytes in `PdfName`
- Added many new unit tests
- Added methods to free object memory of objects that are not needed
- anymore (These objects will be re-read from disk if they are
  needed again)
- Fixed a crash when appending PDFs
- Added unicode support on Win32 (`wchar_t` constructors and methods
- where appropriate, e.g. file handling)
- Fixed a memory leak in `PdfStream`
- Small optimizations in various places
- Fixed `DCTDecode` filter for CMYK images
- `PdfReference` is now immutable, which allows for various optimizations
- Fixed `PdfInputDevice::Read` to return now the correct number of bytes
  read
- Fixed a memory leak in `PdfImmediateWriter`/`PdfStreamedDocument`
- Fixed several minor parsing issues
- Fixed adding text to existing pages
- Added Lua5.1 plan file support to `podofoimpose`
- Several fixes in creating XObjects from pages
- Fixed a possible crash in `PdfNamesTree`
- Added support for setting colors in `PdfAnnotations`
- Added advanced text drawing support to `PdfPainter`
- Fixed parsing of Type1 fonts
- Fixed deletion of `PdfAnnotations` (fixes a memory leak)

Version 0.5

- Added support for `/EmbeddedFiles` (annotations & named objects)
- Added support for `/ExtGStates` when drawing
  initially only supports basic transparency
- Fixed reading values from nametrees
- Added support for named destinations
- Fixed a memory leak in `PdfDestination::GetPage`
- Pages do not know their page number inside of the document
- Fixed reading `PdfActions` from PDF files
- Moved filter implementations to `PdfFiltersPrivate.h`
- Added `PdfFilter::CanEncode` and `PdfFilter::CanDecode`
- Simpliefid PoDoFos handling of XRef tables

Version 0.4

- `PdfImage` now supports creating an image stream from a "raw bitmap"
  which can also be optionally Flate compressed
- Added some new Page-related methods to PdfDocument:
    * `Append` - append one document to another
    * `InsertPages` - insert a range of pages from one document to another
    * `DeletePages` - delete a range of pages
- Added new tool `podofomerge` for merging two PDFs together
- Added methods to get & set a document's `PageMode`
- Added methods to set a document's `FullScreen` mode
- Added methods to set all the various `/ViewerPreferences` for a document
- Added methods to set the document's PageLayout
- Added `/Outlines` support
  modified `podofoinfo` to display them, if present
- Added a `PdfDestination` class
- Added `PdfNamesTree` class for handling the global named objects
  modified `podofoinfo` to display them, if present
- `PdfPainter` can draw bezier curves
- Added XCode project for building on Mac OS X
  fixed up conditionals in font code to enable building on
  MacOSX - but no font loading yet
- Added support for writing linearized PDF
- Added support for garbage collection of unused objects
- Simplified `PdfObject` constructor
- Improved annotation support
- Added support to encode names and various name testcases
- Fixed ascent and descent of fonts
- Improved `PdfImage` API
- Added support for the creation of file identifiers which makes
  PoDoFo created PDF files work in more different PDF
  workflows
- `PdfImage` optionally takes ownership of buffers
- Fixed a major parser bug: the parser expected all objects in
  object streams to be of type dictionary.

Version 0.3
- Total revamp of `PdfObject` & `PdfVariant` to enable clean/consistent object handling;
  Added new `PdfDocument` object - new high level object for reading & writing a PDF doc;
- Total revamp of the `PdfDocument`, `PdfWriter` & `PdfParser` relationship
  `PdfDocument` is now hub for both reading and writing a document
  it holds the `PdfVecObjects` - the others just reference them.
- Total revamp of `PdfPainter`
    * now uses PDF coordinates - UserUnits from bottom/left
      added `PdfPainterMM` for mm-based coords
    * supports user-specified float precision
      and writes out floats in an optimal manner
    * supports "appending" mode for drawing on existing documents
- Improved handling of the `/Info` dict for both reading and writing PDFs;
- Added new test app - `podofopdfinfo`, which will be used to dump metadata, etc. from a PDF;
- Added `PdfError::DebugMessage()` as the official way to write out debugging info;
  updated all other debugging msgs to use this;
- Added `PdfError::DebugEnabled()` to enable/disable display of debug messages;
- Added tracking of file size in `PdfParser`;
- Minor tweak to linearization handling - to enable getting the status from a doc;
- Added getting `GetPdfVersionAsString()` to `PdfWriter`;
- Added new info/object getting methods to `PdfDocument`:
    * `IsLinearized()`;
    * `FileSize()`;
    * `GetStructTreeRoot()`;
    * `GetMetadata()`;
    * `GetOutlines()`;
    * `GetAcroForm()`.
- Updated `pdfinfo` & `podofopdfinfo` to call the new `PdfDocument` methods;
- Added `PdfDictionary` and `PdfArray` classes;
- Added new `PdfPagesTree` (inside of `PdfDocument.cpp`) for handling walking a `/Pages` tree;
- Added new `GetPageCount()` method to `PdfDocument`;
- Modifications to `PdfPage` to attach it to a `PdfDocument` & construct from a `PdfObject`;
- Added new Legal and A3 standard page sizes;
- Changed page coordinates to be PDF unit-based instead of 1/1000mm;
- Changed `PdfRect` to use PDF units and also use bottom instead of top;
- Added ability to go between `PdfRect` and `PdfArray` & also get string version of a `PdfRect`;
- Added support for `PdfPage` to return all the standard boxes (Media, Crop, etc);
- Added support for fetching inherited values from pages (eg. boxes, rotation, etc.)
- Added more methods to `PdfPage`:
    * `GetRotation()`;
    * `GetNumAnnots()`.
- Use exceptions now instead of error codes;
- Removed `Init` from `PdfOutputDevice`;
- Removed `Init` from `PdfParser`;
- Added LZW Filter support;
- Added `PdfElement` as base class for `PdfAction`, `PdfAnnotation` and
- PdfPage;
- Fixed `podofoimageextract`, `podofotxt2pdf` and `podofopdfinfo`;
- Removed `PdfSimpleWriter` in favour of `PdfDocument`;
- Headers are now installed in `includedir/podofo/`;
- Added a new `WatermarkTest`
  demonstrates how to read an existing PDF and draw on each page.

Version 0.2

- Improved Documentation;
- Added `SetInformation` for additional error information to `PdfError`;
- Fixed the underline color of text;
- Introduced `PdfReference` class;
- Fixed `PdfStream::GetFilteredCopy`;
- Improved handling of `/DecodeParms` for filters;
- Fixed PDF files with more than one `/DecodeParms` dictionary
    in one object;
- Added on demand loading of objects to the `PdfParser`;
- Ported to Windows by Leonard Rosenthol;
- On demand loading of objects is now the default;
- Refactored `PdfFilter` interface so that filters are cached;
- Fixed multiple connected XRef tables through `/Prev` keys in the trailer;
- Fixed a number of compiler warnings;
- Replaced `char*` with `std::strings` in a number of classes;
- Added `std::ostream` support to `PdfOutputDevice;`
- Improvements to the `ImageExtractor` tool;
- Refactored `PdfVariant` so that it is easier to use.

Version 0.1 (11 June 2006)

- Initial release.
