IPA Zounds

Version 3.1
	* added reverse sound change applier to ipa module, script and GUI
	    * does not support homorganic variables
	* added support for #, : and = in script mapping files
	* added dialects, rule groups, persistent rules and dates to rules
	  file syntax, allowing restricted transformations
	* added ability to cancel transformations
	* added properties dialog to GUI to show details of results
	* improved error handling of certain problems
	* revised documentation to match above changes
	
Version 3.0.1
        * bug fix release
        * fixed bug saving results in GUI
        * fixed X-SAMPA conversion bug
        * GUI now requires PyGTK 2.8 or later

Version 3.0
	* added support for transliterating input and output into and out
	  of non-IPA scripts, using user-defined mappings (IPA and X-SAMPA
	  support built in)
	* added reverse sound change applier to zounds module and script
	* added delayedrelease binary feature and alveolar and
	  postalveolar affricates to IPA model
	* refactored code base
	* updated the GUI, including new About and Preferences dialog
	* GUI now requires PyGTK 2.6 or later
	* renamed ipazounds.py to ipa-zounds.py
	* added upgrade notes in file UPGRADE
	* relicenced manual under GPL
	
Version 2.3
	* added distutils support, so that files will be installed
	  correctly; this also provides a Windows installer
	* removed unnecessary English l10n files
	* fixed bug with threading when an error occured during a
	  transformation
	
Version 2.2
	* fixed bug in GUI display of rules due to change in PyGTK 2.4.1
	* added exception handling when opening empty files
	
Version 2.1
	* added test for PyGTK version 2.4 or greater in ipazounds.py
	* fixed data errors in xsampadata.py
	* added ability to convert from Unicode IPA to X-SAMPA to
	  convertipa.py
	* added support for converting IPA Zounds rules to and from
	  X-SAMPA to convertipa.py
	* added -x option to ipa.py to use X-SAMPA for input and output
	* updated documentation to reflect above changes
	
Version 2.0
	* replaced wxPython GUI with PyGTK GUI; new features are:
	    * added saving of preferences
	    * added keyboard accelerators for most tasks
	    * added progressbar to notify when a transformation is taking
	      place
	* fixed problems in aligning multiline feature sets when fully
	  formatting rules and added appropriate unit tests
	* added error handling and appropriate unit test for when IPA
	  diacritics and spacing modifiers do not follow an IPA base
	  character
	* fixed error handling for invalid features to cover an invalid
	  feature in a group of valid features
	* added program to convert X-SAMPA to Unicode IPA
	* added support for generic sounds (a sound with no features) and
	  suprasegmentals
	* added support for zero-or-more repeater (*) in the environment
	  component of rules
	* added support for suprasegmental features (syllable break,
	  stress marker, and phrase boundary)
	* removed hyphens from tonal feature names so that they work
	* corrected retroflex click's feature set
	* updated and corrected documentation
	* added error handling and unit tests for various incorrect input
	* added support for homorganic variables
	* optimised code slightly, and added use of psyco package if it is
	  installed
	* allowed comment lines (starting with '#') in lexicon and rules
	  files
	
Version 1.7
	* fixed problem opening main window when using wxPython 2.5
	* fixed problem opening files with a BOM
	* fixed error handling in GUI
	* removed out-of-date Dutch translation
	
Version 1.6
	* added basic support for syllable breaks
	* fixed encoding problems on some error strings
	* fixed problem when input words had redundant IPA diacritics
	
Version 1.5.1
	* fixed issues with internationalisation support:
	    * added fallback translation to ipa and zounds modules
	    * added code to find translation when calling ipagui from
	      another directory
	
Version 1.5
	* added internationalisation support
	* added very partial Dutch translation for ipa, zounds and
	  gui/main modules
	* changed command line options and default behaviour for ipa and
	  zounds modules
	* fixed bug in zounds module's handling of variables, when more
	  than one value occured in a word
	* added error handling for using variables with mismatched number
	  of values
	* tidied GUI to use user selected font in transform options
	  dialogue 

Version 1.4
	* fixed bug in error handling on non-IPA characters, where
	  diacritics and spacing modifiers were not recognised
	* added unit tests to check error handling
	* added error handling for binary features given with no sign (+
	  or -)
	
Version 1.3
	* removed stray debugging print statement
	* added left margin to text display in the GUI
	* minor code tweaks (correcting capitalisation of True/False)
	
Version 1.2.1
	* fixed Docbook validation errors in documentation
	
Version 1.2
	* added support for vertical display of associated binary
	  features:
	    * requires monospace font which includes Unicode
	      characters in the range U+239B to U+23A6 to be
	      of any use
	    * -m option (used in conjunction with -p) on command
	      line
	    * toggle in GUI
	* added font dialogue for setting the font for user data
	* requires Python2.3 due to Unicode characters for extended
	  brackets not being recognised in Python2.2

Version 1.1
	* minor bug fixes

Version 1.0
	* initial release