1.24 - 2014.08.13
-----------------

* Moved to Bitbucket: https://bitbucket.org/lazka/mutagen
* ID3:

  * Parse utf-16 text frames with wrong termination :bug:`169`
  * Fix parsing of utf-16 SYLT frames :bug:`173`

* WavPack:

  * Fix length calculation if sample count is missing in the header :bug:`180`

* setup.py: Don't install leftover files produced by the test suite :bug:`179`
* tests: Fix error with POSIX locale :bug:`181`

1.23 - 2014.05.14
-----------------

* tools: Don't crash in misconfigured envs, fall back to utf-8.
* mp3: Return correct mimetype for MP2 files. :bug:`163`
* id3: deterministic sorting of frames. :bug:`166`
* AIFF support :bug:`146` (Evan Purkhiser)

1.22 - 2013.09.08
-----------------

* Minimum required Python version is now 2.6
* Online API reference at https://mutagen.readthedocs.org/
* EasyID3:

  * Fix crash with empty TXXX values. :bug:`135`

* ID3:

  * id3v2.3 writing support :bug:`85`
  * Add iTunes podcast frames (TGID, TDES, WFED) :bug:`141`
  * Updated id3v1 genre list

* MP4:

  * add_tags() will not replace existing tags. :bug:`101`
  * Don't ignore tags if parsing unknown atoms fails.
  * Raise on invalid 64bit atom size :bug:`132` (Sidnei da Silva)

* APEv2:

  * Handle invalid tag item count. :bug:`145` (Dawid Zamirski)

* Ogg:

  * Faster parsing of files with large packets.

* VComment:

  * Preserve text case for field names added through the dict interface
    :bug:`152`

* mid3v2:

  * New -e,--escape switch to enable interpretation of escape sequences and
    makes escaping of the colon separator possible. :bug:`159`

* mid3iconv:

  * Convert COMM frames :bug:`128`

1.21 - 2013.01.30
-----------------

* Fix Python 2.3 compatibility (broken in 1.19).
* Fix many warnings triggered by -3. :bug:`27`
* mid3v2:

  * Add --TXXX support. :bug:`62` (Tim Phipps)
  * Add --POPM support. :bug:`71`
  * Allow setting multiple COMM or TXXX frames with one command line.

* FLAC:

  * Try to handle corrupt Vorbis comment block sizes. :bug:`52`
  * Try to handle corrupt Picture block sizes :bug:`106` (Christoph Reiter)
  * Don't leak file handle with PyPy :bug:`111` (Marien Zwart)

* ID3:

  * MakeID3v1: Do not generate bad tags when given short dates. :bug:`69`
  * ParseID3v1: Parse short (< 128 byte) tags generated by old Mutagen
    implementations of MakeID3v1, and tags with garbage on the front.
  * pprint: Sort frames by name.
  * Upgrade unknown 2.3 frames :bug:`97` (Christoph Reiter)
  * Fix handling of invalid SYLT frames :bug:`105` (Christoph Reiter)

* MP3:

  * Fix error when loading extremely small MP3s. :bug:`72`
  * Fix rounding error in CBR length calculation :bug:`93` (Christoph Reiter)

* Use 'open' rather than 'file' everywhere. :bug:`74` (Dan Callahan)
* mid3iconv:

  * Accurately copy QL-style frame encoding behavior. :bug:`75`
  * Skip unopenable files. :bug:`79`

* ID3FileType:

  * Remember which tag type load() was called with even if the file
    doesn't yet have any ID3 tags. :bug:`89`

* VComment:

  * Prevent MemoryError when parsing invalid header :bug:`112`
    (Jyrki Pulliainen)

* ASF:

  * Don't corrupt files on the second save() call :bug:`81` (Christoph Reiter)
  * Always store GUID objects in the MetadataLibraryBlock :bug:`81`

* OggTheora: Fix length/bitrate calculation. :bug:`99` (Christoph Reiter)
* MP4:

  * Less strict MP4 covr atom parsing. :bug:`86` (Lukáš Lalinský)
  * Support atoms that extend to the end of the file. :bug:`109`
    (Sidnei da Silva)
  * Preserve freeform format flags :bug:`103` (Christoph Reiter)

* OggOpus support. :bug:`115` (Christoph Reiter)
* Musepack:

  * Fix SV7 bitrate calculation :bug:`7` (Christoph Reiter)
  * Support SV8 :bug:`7` (Christoph Reiter)

1.20 - 2010.08.04
-----------------

* ASF: Don't store blocks over 64K in the MetadataObject block;
  use the MetadataLibraryBlock instead. :bug:`60` (Lukáš Lalinský)
* ID3: Faster parsing of files with lots of padding. :bug:`65`
  (Christoph Reiter)
* FLAC: Correct check for audio data start. :bug:`67`

1.19 - 2010.02.18
-----------------

* ID3:

  * POPM: 'count' is optional; the attribute may not exist. :bug:`33`
  * TimeStampTextFrame: Fix a TypeError in unicode comparisons. :bug:`43`
  * MakeID3v1: Translate TYER into ID3v1 year if TDRC is not present. :bug:`42`

* mid3v2:

  * Allow --delete followed by --frame, and --genre 1 --genre 2. :bug:`37`
  * Add --quiet and --verbose flags. :bug:`40`

* moggsplit: --m3u option to write an M3U playlist of the new files. :bug:`39`
* mid3iconv: Fix crash when processing TCML or TIPL frames. :bug:`41`
* VCommentDict: Correctly normalize key names for .keys() iterator. :bug:`45`
* MP3: Correct length calculation for MPEG-2 files. :bug:`46`
* oggflac: Fix typo in docstring. :bug:`53`
* EasyID3: Force UTF-8 encoding. :bug:`54`
* EasyMP4: Fix 'genre' translation. :bug:`56`

1.18 - 2009.10.22
-----------------

* ASF:

  * Distinguish between empty and absent tag values in
    ContentDescriptionObjects. :bug:`29`

* mid3iconv:

  * Fix a crash when processing empty (invalid) text frames.

* MAJOR API INCOMPATIBILITY!!!!

  * EasyID3FileType is now in mutagen.easyid3, not mutagen.id3. This
    change was necessary to restore API compatibility with 1.16, as
    1.17 accidentally contained a circular import preventing
    mutagen.easyid3 from importing by itself. :bug:`32`

1.17 - 2009.10.07
-----------------

* ID3:

  * Support for the iTunes non-standard TSO2 and TSOC frames.
  * Attempt to recover from bad SYLT frames. :bug:`2`
  * Attempt to recover from faulty extended header flags. :bug:`4` :bug:`21`
  * Fix a bug in ID3v2.4 footer flag detection, :bug:`5`

* MP4:

  * Don't fail or double-encode UTF-8 strings when given a str.
  * Don't corrupt 64 bit atom sizes when resizing atoms. :bug:`17`

* EasyID3:

  * Extension API for defining new "easy" tags at runtime.
  * Support for many, many more tags.

* OggVorbis, OggSpeex: Handle bitrates below 0 as per the spec. :bug:`30`
* EasyMP4: Like EasyID3, but for iTunes MPEG-4 files.
* mutagen.File: New 'easy=True' argument to create new EasyMP3, EasyMP4,
  EasyTrueAudio, and EasyID3FileType instances.

1.16 - 2009.06.15
-----------------

* Website / code repository move.
* Bug Fixes:

  * EasyID3: Invalid keys now raise KeyError (and ValueError).
  * mutagen.File: .flac files with an ID3 tag will be opened as FLAC.

* MAJOR API INCOMPATIBILITY!!!!

  * Python 2.6 has required us to rename the .format attribute of M4A/MP4
    cover atoms, because it conflicts with the new str.format method.
    It has been renamed .imageformat.

1.15 - 2008.12.01
-----------------

* Bug Fixes:

  * mutagen.File: Import order no longer affects what type is returned.
  * mutagen.id3: Compression of frames is now disabled.
  * mutagen.flac.StreamInfo: Fix channel mask (support channels > 2). :bug:`35`
  * mutagen.mp3: Ignore Xing headers if they are obviously wrong.

1.14 - 2008.05.31
-----------------

* Bug Fixes:

  * MP4/M4A: Fixed saving of atoms with 64-bit size on 64-bit platforms.
  * MP4: Conversion of 'gnre' atoms to '\xa9gen' text atoms now correctly
    produces a list of string values, not just a single value.
  * ID3: Broken RVA2 frames are now discarded. (Vladislav Naumov)
  * ID3: Use long integers when appropriate.
  * VCommentDict: Raise UnicodeEncodeErrors when trying to use a Unicode
    key that is not valid ASCII; keys are also normalized to ASCII
    str objects. (Forest Bond)

* Tests:
  * FLAC: Use 2**64 instead of 2**32 to test overflow behavior.

1.13 - 2007.12.03
-----------------

* Bug Fixes:

  * FLAC: Raise IOError, instead of UnboundLocalError, when trying
    to open a non-existant file. (Lukáš Lalinský, Debian #448734)
  * Throw out invalid frames when upgrading from 2.3 to 2.4.
  * Fixed reading of Unicode strings from ASF files on big-endian
    platforms.

* TCP/TCMP support. (Debian #452231)
* Faster implementation of file-writing when mmap fails, and
  exclusive advisory locking when available.
* Test cases to ensure Mutagen is not vulnerable to CVE-2007-4619.
  It is not now, nor was it ever.
* Use VBRI header to calculate length of VBR MP3 files if the Xing
  header is not found.

1.12 - 2007.08.04
-----------------

* Write important ID3v2 frames near the start. (Lukáš Lalinský)
* Clean up distutils functions.

1.11 - 2007.04.26
-----------------

* New Features:

  * mid3v2 can now set URL frames. (Vladislav Naumov)
  * Musepack: Skip ID3v2 tags. (Lukáš Lalinský)

* Bug Fixes:

  * mid3iconv: Skip all timestamp frames. (Lukáš Lalinský)
  * WavPack: More accurate length calculation. ('ak')
  * PairedTextFrame: Fix typo in documentation. (Lukáš Lalinský)
  * ID3: Fixed incorrect TDAT conversion. The format is DDMM, not
    MMDD. (Lukáš Lalinský)

* API:

  * Metadata no longer inherits from dict.
  * Relatedly, the MRO has changed on several types.
  * More documentation for MP4 atoms. (Lukáš Lalinský)
  * Prefer MP3 for files with unknown extensions and ID3 tags.

1.10.1 - 2007.01.23
-------------------

* Bug Fixes:

  * Documentation mentions ASF support.
  * APEv2 flags and valid keys are fixed.
  * Tests pass on Python 2.3 again.

1.10 - 2007.01.21
-----------------

* New Features:

  * FLAC: Skip ID3 tags. Added option to delete them on save.
  * EncodedTextSpec: Make private members more private.
  * Corrupted Oggs generated by GStreamer (e.g. Sound Juicer) can be read.
  * FileTypes have a .mime attribute which is a list of likely MIME types
    for the file.
  * ASF (WMA/WMV) support.

* Bug Fixes:

  * ID3: Fixed reading of v2.3 tags with unsynchronized data.
  * ID3: The data length indicator for compressed tags is written
    as a synch-safe integer.

1.9 - 2006.12.09
----------------

* New Features:

  * OptimFROG support.
  * New mutagen.mp4 module with support for multiple data fields per atom
    and more compatible tag saving implementation.
  * Support for embedded pictures in FLAC files (new in FLAC 1.1.3).

* mutagen.m4a is deprecated in favor of mutagen.mp4.

1.8 - 2006.10.02
----------------

* New Features:

  * MonkeysAudio support. (#851, Lukáš Lalinský)
  * APEv2 support on Python 2.5; see API-NOTES. (#852)

1.7.1 - 2006.09.24
------------------

* Bug Fixes:

  * Expose full ID3 tag size as .size. (#848)

* New Features:

  * Musepack Replay Gain data is available in SV7 files.

1.7 - 2006.09.15
----------------

* Bug Fixes:

  * Trying to save an empty tag deletes it. (#813)
  * The semi-public API removal mentioned in 1.6's API-NOTES happened.
  * Stricter frame ID validation. (#830, Lukáš Lalinský)
  * Use os.path.devnull on Win32/Mac OS X. (#831, Lukáš Lalinský)

* New Features:

  * FLAC cuesheet and seektable support. (#791, Nuutti Kotivuori)
  * Kwargs can be passed to ID3 constructors. (#824, Lukáš Lalinský)
  * mutagen.musepack: Read/tag Musepack files. (#825, Lukáš Lalinský)

* Tools:

  * mutagen-inspect responds immediately to keyboard interrupts.

1.6 - 2006.08.09
----------------

* Bug Fixes:

  * IOError rather than NameError is raised when File succeeds in
    typefinding but fails in stream parsing.
  * errors= kwarg is correctly interpreted for FLAC tags now.
  * Handle struct.pack API change in Python 2.5b2. (SF #1530559)
  * Metadata 'load' methods always reset in-memory tags.
  * Metadata 'delete' methods always clear in-memory tags.

* New Features:

  * Vorbis comment vendor strings include the Mutagen version.
  * mutagen.id3: Read ASPI, ETCO, SYTC, MLLT, EQU2, and LINK frames.
  * mutagen.m4a: Read/tag MPEG-4 AAC audio files with iTunes tags. (#681)
  * mutagen.oggspeex: Read/tag Ogg Speex files.
  * mutagen.trueaudio: Read/tag True Audio files.
  * mutagen.wavpack: Read/tag WavPack files.

* Tools:

  * mid3v2: --delete-frames. (#635)

1.5.1 - 2006.06.26
------------------

* Bug Fixes:

  * Handle ENODEV from mmap (e.g. on fuse+sshfs).
  * Reduce test rerun time.

1.5 - 2006.06.20
----------------

* Bug Fixes:

  * APEv2

    * Invalid Lyrics3v2 tags are ignored/overwritten.
    * Binary values are autodetected as documented.

  * OggVorbis, OggFLAC:

    * Write when the setup packet spans multiple pages.
    * Zero granule position for header packets.

* New Features:

  * mutagen.oggtheora: Read/tag Ogg Theora files.
  * Test Ogg formats with ogginfo, if present.

1.4 - 2006.06.03
----------------

* Bug Fixes:

  * EasyID3: Fix tag["key"] = "string" handler. (#693)
  * APEv2:

    * Skip Lyrics3v2 tags. (Miguel Angel Alvarez)
    * Avoid infinite loop on malformed tags at the start of the file.

  * Proper ANSI semantics for file positioning. (#707)

* New Features:

  * VComment: Handle malformed Vorbis comments when errors='ignore' or
    errors='replace' is passed to VComment.load.
    (Bastian Kleineidam, #696)
  * Test running is now controlled through setup.py (./setup.py test).
  * Test coverage data can be generated (./setup.py coverage).
  * Considerably more test coverage.

1.3 - 2006.05.29
----------------

* New Features:

  * mutagen.File: Automatic file type detection.
  * mutagen.ogg: Generic Ogg stream parsing. (#612)
  * mutagen.oggflac: Read/tag Ogg FLAC files.
  * mutagen.oggvorbis no longer depends on pyvorbis.
  * ID3: SYLT support. (#672)

1.2 - 2006.04.23
----------------

* Bug Fixes:

  * MP3: Load files with zeroed Xing headers. (#626)
  * ID3: Upgrade ID3v2.2 PIC tags to ID3v2.4 APIC tags properly.
  * Tests exit with non-zero status if any have failed.
  * Full dict protocol support for VCommentDict, FileType, and APEv2 objects.

* New features:

  * mutagen.oggvorbis gives pyvorbis a Mutagen-like API.
  * mutagen.easyid3 makes simple ID3 tag changes easier.
  * A brief TUTORIAL was added.

* Tools:

  * mid3iconv, a clone of id3iconv, was added by Emfox Zhou. (#605)

1.1 - 2006.04.04
----------------

* ID3:

  * Frame and Spec objects are not hashable.
  * COMM, USER: Accept non-ASCII (completely invalid) language codes.
  * Enable redundant data length bit for compressed frames.

1.0 - 2006.03.13
----------------

* mutagen.FileType, an abstract container for tags and stream information.
* MP3: A new FileType subclass for MPEG audio files.
* FLAC:

  * Add FLAC.delete.
  * Raise correct exception when saving to a non-FLAC file.
  * FLAC.vc is deprecated in favor of FLAC.tags.

* VComment (used by FLAC):

  * VComment.clear to clear all tags.
  * VComment.as_dict to return a dict of the tags.

* ID3:

  * Fix typos in PRIV._pprint, OWNE._pprint, UFID._pprint.

* mutagen-pony: Try finding lengths as well as tags.
* mutagen-inspect: Output stream information with tags.

0.9 - 2006.02.21
----------------

* Initial release.
