v4.16.9 17th July 2015
  - Bug fixes.

v4.16.8 11th June 2015
  - Added support for the current Python v3 exceptions.
  - Bug fixes.

v4.16.7 25th March 2015
  - Added the %VirtualCallCode directive.
  - Bug fixes.

v4.16.6 25th February 2015
  - Added the /FileExtension/ class annotation.
  - Installing into a virtual env should now work.
  - Timestamps are no longer included in generated code.  The -T command line
    option is now ignored and deprecated.
  - The '@file' method of passing additional command line options is now
    supported.  The -z command line option is now deprecated.
  - Bug fixes.

v4.16.5 24th December 2014
  - Added the asarray() method to sip.voidptr.
  - Bug fixes.

v4.16.4 23rd October 2014
  - Added the /AbortOnException/ function annotation.
  - Added the /DisallowNone/ function annotation.
  - Added the /DisallowNone/ argument annotation.
  - Bug fixes.

v4.16.3 11th September 2014
  - Enums now support __qualname__ for Python v3.3 and later.

v4.16.2 3rd July 2014
  - Deprecated the %ConsolidatedModule directive as it won't be supported in
    SIP v5.
  - Bug fixes.

v4.16.1 9th June 2014
  - Bug fixes.

v4.16 26th May 2014
  - Added the /NoSetter/ variable annotation.
  - Added the -B option to sip.
  - Changed the handling of timelines (introducing a potential incompatibility)
    so that later versions of wrapped libraries can be wrapped so long as they
    are compatible with known versions.
  - Added support for the 'no_receiver_check' argument to connect() in PyQt
    v4.11.
  - Added the --configuration option to configure.py.
  - Added the --sysroot option to configure.py.
  - Added the --target-py-version option to configure.py.
  - Added the --no-tools option to configure.py.
  - Added the --use-qmake option to configure.py.
  - Bug fixes.

v4.15.5 14th March 2014
  - The use_arch argument of sipconfig.create_wrapper() can now specify a space
    separated set of architectures.
  - Bug fixes.

v4.15.4 8th January 2014
  - Added SIP_SSIZE_T_FORMAT to the C API.
  - Bug fixes (specifically for PyQt5).

v4.15.3 16th October 2013
  - Bug fixes (specifically for PyQtChart).

v4.15.2 14th September 2013
  - sipConvertToArray() will now optionally take ownership of the array memory.
  - Added support for char, unsigned char, short, int, float and double as
    array types.
  - Bug fixes.

v4.15.1 23rd August 2013
  - Fixes a regression in the handling of hidden virtual methods.

v4.15 21st August 2013
  - Added the call_super_init argument to the %Module directive to specify that
    classes should support cooperative multi-inheritance.
  - Added the %FinalisationCode directive.
  - Added the /Mixin/ class annotation.
  - Added the /NoScope/ enum annotation.
  - Added sipConvertFromNewPyType() to the C API.
  - Added sipConvertToArray() and sipConvertToTypedArray() to the C API.
  - Added sipRegisterProxyResolver() to the C API.
  - Bug fixes.

v4.14.7 16th June 2013
  - The internal API version is increased to 10.0 requiring the regeneration of
    all modules.
  - Added the /Sequence/ function annotation.
  - %ConvertFromTypeCode can now be specified for classes.
  - Added sipEnableAutoconversion() to the C API.
  - Added sipSetDestroyOnExit() to the C API.
  - Bug fixes.

v4.14.6 21st April 2013
  - Bug fixes.

v4.14.5 26th March 2013
  - Bug fixes (specifically for QGIS).

v4.14.4 1st March 2013
  - The handwritten code provided to the %VirtualErrorHandler directive is now
    called with the GIL held and from the thread that raised the error.  This
    is, potentially, an incompatible change.
  - Bug fixes.

v4.14.3 28th January 2013
  - The /KeepReference/ argument annotation, when applied to factories, will
    now keep the reference with the object created by the factory.
  - Any object that supports the buffer protocol can now be passed when a
    sip.voidptr is expected.
  - Bug fixes.

v4.14.2 8th December 2012
  - Added sip.setdestroyonexit().
  - sip.voidptr() will now accept any object that implements the buffer
    protocol.
  - Bug fixes.

v4.14.1 27th October 2012
  - SIP_PYBUFFER can now be used to define objects that implement the Python
    buffer protocol.
  - Added /Capsule/ typedef annotation.
  - Added the 'z' format character to sipBuildResult().
  - Added the 'z', '!' and '$' format characters to sipParseResult().
  - The C prototype foo(void) is now accepted.
  - sipdistutils.py will now include swig_opts if no sip_opts have been
    defined.
  - Bug fixes.

v4.14 29th September 2012
  - The internal API version is increased to 9.0 requiring the regeneration of
    all modules.
  - Added the %InstanceCode directive.
  - Added the %VirtualErrorHandler directive.
  - Added the default_VirtualErrorHandler argument to the %Module directive.
  - Added the /VirtualErrorHandler/ class annotation.
  - Added the /NoVirtualErrorHandler/ and /VirtualErrorHandler/ function
    annotations.
  - The /AllowNone/ and /NoRelease/ mapped type annotations can now be used
    with mapped type templates.
  - SIP_PLATFORM_* and SIP_TIMELINE_* preprocessor symbols are generated
    corresponding to the '-t' arguments passed on the command line.
  - Deprecated sipTransferBreak().
  - For Python v2.x unsigned short and unsigned char (when used as a byte) are
    now converted to int, rather than long, objects.
  - Added support for MSVC 2010 to the build system.

v4.13.3 20th June 2012
  - The /NoRaisesPyException/ and /RaisesPyException/ function annotations can
    now be applied to constructors.
  - Added support for the Python v3.3 handling of Unicode.

v4.13.2 10th February 2012
  - A bug fix release.

v4.13.1 22nd December 2011
  - Deprecation warnings can no longer be disabled.
  - Added the all_raise_py_exception argument to the %Module directive.
  - Added the /NoRaisesPyException/ function annotation.
  - Added the /PyName/ typedef annotation.
  - Class templates now allow super-classes to be defined as template
    arguments.
  - Added support for 'public' preceding the name of a class in a super-class
    list.
  - Added support for 'protected' and 'private' preceding the name of a class
    in a super-class list.  Any such super-class will be ignored.

v4.13 25th October 2011
  - Added the %DefaultDocstringFormat directive.
  - Added the format argument to the %Docstring directive.
  - %ConvertToSubClassCode can now cause a restart of the conversion process
    using a different requested type.
  - '*' and '&' are now supported as unary operators in expressions used in the
    values of default arguments.
  - The /Transfer/ annotation can now be used with the /Array/ annotation to
    prevent the freeing of the temporary array of pointers.

v4.12.4 2nd August 2011
  - PyLong_AsUnsignedLongMask() and PyLong_AsUnsignedLongLongMask() are now
    used in preference to PyLong_AsUnsignedLong() and
    PyLong_AsUnsignedLongLong().
  - The build system now supports Qt being built with the -qtlibinfix flag.

v4.12.3 22nd May 2011
  - A bug fix release.

v4.12.2 30th April 2011
  - /KeepReference/ is now supported as a function annotation.
  - Handwritten code in class templates no longer have the types substituted in
    lines that appear to contain C preprocessor directives.
  - Added support for global inplace numeric operators.

v4.12.1 22nd January 2011
  - Added support for the __getattribute__, __getattr__, __setattr__ and
    __delattr__ methods.
  - Added the /RaisesPyException/ function annotation.
  - Added SIP_SSIZE_T as a predefined type.
  - PyObject * can now be used as a synonym for SIP_PYOBJECT.
  - Added sip.ispycreated() to the sip module.
  - Added the --deployment-target flag to configure.py for MacOS/X.

v4.12 23rd December 2010
  - Implemented the revised directive syntax for %Module.
  - Deprecated %CModule, use %Module instead.
  - Added the keyword_arguments argument to %Module to specify the level of
    support for Python keyword arguments.
  - Deprecated the -k flag to sip, use the keyword_arguments argument to
    %Module instead.
  - Added an automatic pseudo-%Timeline to allow the SIP version number to be
    used in the %If directive.
  - Changed the behavior of the /KeywordArgs/ annotation to specify the level
    of support for Python keyword arguments.
  - Deprecated the /NoKeywordArgs/ annotation, use /KeywordArgs="None"/
    instead.
  - Added the use_argument_names argument to %Module to provide the real names
    of arguments to handwritten code.
  - Module docstrings are now supported.
  - Added %AutoPyName to automatically provide Python names.
  - Added %Property to implement Python properties based on C/C++ getters and
    setters.
  - Added %Extract to allow arbitrary text to be embedded in specification
    files and subsequently extracted.
  - Deprecated %Doc and %ExportedDoc, use %Extract instead.
  - Added the -X flag to sip to extract text defined with %Extract.
  - Deprecated the -d flag to sip, use -X instead.
  - Added /PyInt/ as an argument, function and typedef annotation to force
    char types to be handled as Python integers rather than single character
    strings.
  - Added the L and M format characters to sipBuildResult(), sipCallMethod()
    and sipParseResult().
  - Added sipGetAddress().
  - Added the -T flag to sip to suppress the timestamp in the header comments
    of generated files.
  - sip.voidptr now behaves like a Python memoryview object and supports
    sub-script assignment.
  - Added the --sip-module flag to configure.py to allow the name and
    containing package of the sip module to be specified thereby allowing
    packages to include a local copy of the sip module.

v4.11.2 22nd October 2010
  - /KeepReference/ can now be applied to global functions and static methods.
  - %TypeCode can now be specified in a %MappedType directive.
  - Mapped types for templates no longer require the template arguments to be
    fully defined.
  - Build system changes required by PyQt v4.8 and Qt v4.7.

v4.11.1 6th September 2010
  - A bug fix release.

v4.11 31st August 2010
  - Added the %UnitPostIncludeCode directive.
  - /KeepReference/ will now accept a key to track when the same object is
    passed to more than one method.
  - operator() and __call__() can now accept keyword arguments.
  - Added support for Python v3.2.

v4.10.5 16th July 2010
  - A bug fix release for Python v3 and Python v2.7.

v4.10.4 15th July 2010
  - Use capsules when being built for Python v2.7 to work around an apparent
    bug in the support for PyCObject.

v4.10.3 12th July 2010
  - Added support for Q_SLOT, Q_SLOTS, Q_SIGNAL and Q_SIGNALS.
  - Added the /__len__/ function annotation.

v4.10.2 16th April 2010
  - A bug fix release.

v4.10.1 17th March 2010
  - Added the /NoCopy/ function and argument annotations.

v4.10 14th January 2010
  - Added the sip.voidptr.ascapsule() method.
  - Added the -P command line option to build modules with "protected"
    redefined to "public" if supported by the platform.  This can result in
    significantly smaller modules.
  - Added the -o command line option to automatically generate docstrings.
  - Added the -k command line option and /KeywordArgs/ and /NoKeywordArgs/
    function annotations to support keyword arguments.
  - Added the /Default/ exception annotation.
  - Added the /DocType/ argument, function, mapped type and variable
    annotation.
  - Added the /DocValue/ argument annotation.
  - Added the %Docstring directive to specify explicit docstrings for classes,
    functions and methods.
  - Added sipError to %MethodCode to allow user errors to be distinguished from
    interpreter errors.
  - Added sipBadCallableArg() to the C API.
  - Added support for configuring and building outside of the source tree.

v4.9.3 23rd November 2009
  - A bug fix release.

v4.9.2 20th November 2009
  - A bug fix release.

v4.9.1 23rd October 2009
  - A bug fix release.

v4.9 26th September 2009
  - Added support for __iter__ and __next__.  (__next__ is used for Python v2
    as well as v3.)
  - Added the %API directive.
  - Added the /API/ annotation.
  - Added sipIsAPIEnabled() to the C API.
  - Added sip.getapi() and sip.setapi() to the Python API.
  - Added sip.ispyowned() to the Python API.
  - Mapped types can now act as a namespace for enums and static methods.
  - The /Array/ annotation can now be applied to classes and mapped types.
  - The /NoArgParser/ annotation can now be applied to methods as well as
    functions.
  - Added the --arch flag to configure.py to specify which MacOS/X
    architectures are built.
  - SIP is now also licensed under the GPL v2 and v3.

v4.8.2 27th July 2009
  - Added the /AllowNone/ class annotation.

v4.8.1 16th June 2009
  - Added support for defining a private assignment operator to suppress the
    possible generation of an assignment helper.

v4.8 5th June 2009
  - Added support for Python v3.
  - Added the %BIGetBufferCode and %BIReleaseBufferCode to support the buffer
    interface of Python v3.
  - Added the %DefaultMetatype directive and the /Metatype/ class annotation to
    allow the meta-type of a wrapped type to be changed.
  - Added the %DefaultSupertype directive and the /Supertype/ class annotation
    to allow the super-type of a wrapped type to be changed.
  - Added the sip.simplewrapper type to be used as a super-type for wrapped
    types that don't take part in parent/child relationships.
  - Added the %InitialisationCode directive.
  - Added the /KeepReference/ argument annotation.
  - Added the /Encoding/ argument, function, typedef and variable annotation.
  - super() now works as expected with wrapped types.
  - Added support for __floordiv__, __ifloordiv__, __truediv__, __itruediv__
    and __index__.
  - __bool__ is a synonym for __nonzero__.
  - Sphinx is now used for the documentation.
  - Many additions and deprecations in the API to eliminate the differences
    between classes and mapped types.  (See the documentation for the details.)

v4.7.9 17th November 2008
  - A bug fix release.

v4.7.8 8th November 2008
  - Added the /Deprecated/ class and function annotation (based on a patch from
    Lorenzo Berni).
  - Templates now support instance variables and enums.
  - A Python int object can now be used whenever an enum is expected without
    needing to explicitly cast it using the enum's constructor.  The
    /Constrained/ argument annotation can be used to suppress this behaviour.
  - typedef type names are now used in string representations of types (e.g. in
    the names of mapped types) to reflect what the programmer sees rather than
    what the compiler sees.  The /NoTypeName/ typedef annotation can be used to
    suppress this behaviour.

v4.7.7 8th August 2008
  - C++ structs are now properly handled as a class with a default public
    section.
  - sip.dump() now includes the object's first child wrapper.

v4.7.6 20th May 2008
  - Added the -s flag to configure.py to specify the SDK directory to use when
    building universal binaries on MacOS/X.
  - Added support for MSVC 2008 to the build system.
  - Added support for v10.x of the Intel compiler and removed support for
    earlier versions.
  - MSVC 2008 is the default platform when using Python v2.6.

v4.7.5 13th May 2008
  - The sip.voidptr type has an optional size associated with it and supports
    const void *.  If a size is associated then it also supports Python's
    buffer protocol.
  - Added sipConvertToVoidPtr() to the SIP API.
  - Added sipConvertFromConstVoidPtr(), sipConvertFromConstVoidPtrAndSize(),
    sipConvertFromVoidPtr() and sipConvertFromVoidPtrAndSize() to the SIP API.
  - Added the /ResultSize/ argument annotation to specify the size of a block
    of memory returned as a void * or const void *.
  - Added the /NoArgParser/ function annotation to give %MethodCode complete
    responsibility for argument parsing.
  - Added the /NoRelease/ mapped type annotation to specify that the
    sipReleaseMappedType() function is not supported.
  - The /ArraySize/ annotation now supports arrays with more than 2^31
    elements.
  - %GetCode and %SetCode for class attributes now have access to the
    referencing type object.
  - Any object that supports the Python buffer protocol can now be passed as a
    char or char * argument.

v4.7.4 12th February 2008
  - The build system handles the directory structure used by Leopard's Python
    installation.
  - Added support for /Transfer/ as a constructor annotation.

v4.7.3 6th December 2007
  - Added support for automatically generating missing complementary
    comparision operators.  Note that this introduces a potential compatibility
    problem - see the documentation for details.

v4.7.2 5th December 2007
  - Added the /SingleShot/ argument annotation.
  - Added the /TransferThis/ function annotation.

v4.7.1 28th September 2007
  - A bug fix release.

v4.7 30th July 2007
  - Added %PickleCode to allow handwritten code to pickle a wrapped C++
    instance or C structure.
  - Added %CompositeModule to create modules that are composites of ordinary
    modules.
  - Added %ConsolidatedModule (and the -p command line option) to create
    modules that contain all the wrapper code on behalf of ordinary modules.
  - Added the dump() function to the sip module.
  - Added sipTransferBreak() to the SIP API.
  - Added support for /Transfer/ as a function annotation.

v4.6 10th April 2007
  - Added support for wchar_t.
  - The -g command line option releases the GIL whenever a call is made to the
    wrapped library.
  - Added the /HoldGIL/ annotation to explicitly retain the GIL when calling a
    particular function in the wrapped library.
  - Added sipFindClass() and sipFindNamedEnum() to the public API.
  - /TransferThis/ may be specified more than once.
  - Added support for __truediv__ and __itruediv__.
  - The SIP code generator and module may be built as universal binaries under
    MacOS/X using the -n command line option to configure.py.

v4.5.2 9th December 2006
  - A bug fix release.

v4.5.1 9th December 2006
  - Added the SIP_SSIZE_T type to help write PEP 353 compliant handwritten
    code.

v4.5 4th November 2006
  - Added support for Python v2.5.
  - Added sip_config_args to sipconfig.py.
  - sip.voidptr now implements __hex__().
  - Added sip.delete() to call a C++ instance's destructor, or return a C
    structure to the heap.
  - Added sip.isdeleted() to check if a C++ instance or C structure has been
    destroyed or returned to the heap.
  - Added sip.setdeleted() to mark that a C++ instance or C structure has been
    destroyed or returned to the heap.
  - Added support for pure virtual destructors.
  - Added the __dtor__() method to allow Python code to be called from a C++
    destructor.
  - Added the /NoDefaultCtors/ class annotation.
  - The generated API files are now more complete and use Python types rather
    than C/C++ types.
  - Added support for embedding manifests for MSVC 2005.

v4.4.5 10th June 2006
  - A bug fix release.

v4.4.4 8th June 2006
  - Added %ExportedHeaderCode and %UnitCode.
  - Added sipExportSymbol() and sipImportSymbol() to the public API.

v4.4.3 27th April 2006
  - A bug fix release.

v4.4.2 23rd April 2006
  - A bug fix release.

v4.4.1 3rd April 2006
  - A bug fix release.

v4.4 24th March 2006
  - The major number of the internal API has changed so it will be necessary
    to regenerate all modules.
  - This release introduces small incompatibilities that may affect handwritten
    code.  See the documentation for the details.
  - Module names specified with %Module and %CModule can now include periods to
    denote a Python package structure.
  - Namespaces can be split across multiple Python modules.
  - Class templates are now supported and instantiated using "typedef".
  - Mapped type templates are now supported and instantiated automatically.
  - Global operators are now supported.
  - Operator casts in classes are now supported.
  - C/C++ signed char type is now treated as a separate type to char.
  - C/C++ long and unsigned long types are now wrapped as Python long objects
    rather than Python integer objects.
  - C/C++ long long and unsigned long long types are now supported.
  - unsigned short and unsigned int are now implemented as long objects instead
    of integer objects.
  - Classes can now be declared using the /External/ annotation and be defined
    in another, unspecified, module.
  - /TransferThis/ can now be used in non-factory methods to change the
    ownership to a different C++ instance or to change it to Python.
  - /Constrained/ can now be used with booleans.
  - Added support for Python's buffer interface, %BIGetCharBufferCode,
    %BIGetReadBufferCode, %BIGetSegCountCode and %BIGetWriteBufferCode.
  - The "user" member has been added to the sipWrapper structure and can be
    used for any purpose by handwritten code.
  - Function argument names are now parsed, but otherwise ignored.
  - The "explicit" keyword is now parsed, but otherwise ignored.
  - Added the /DelayDtor/ class annotation which given more control over the
    order in which instances are deleted when an application terminates.
  - Added support for the SIP_PYTYPE pseudo-type that represents a Python
    type object.
  - Added support for ellipsis (ie. "...") in function arguments.  Any
    remaining arguments will be gathered as a Python tuple.
  - Add support for the /NoDerived/ annotation for Python class constructors
    that have no C/C++ equivalent.
  - The sipSelfWasArg boolean is now available to the %MethodCode of
    non-abstract, virtual methods to indicate whether the class implementation
    of the method rather than the virtual implementation should be called.
    %MethodCode for non-abstract, virtual, protected methods must now call the
    sipProtectVirt wrapper (rather than sipProtect).
  - sipCanConvertToInstance(), sipConvertToInstance(),
    sipForceConvertToInstance(), sipReleaseInstance(),
    sipConvertFromInstance(), sipConvertFromNewInstance(),
    sipCanConvertToMappedType(), sipConvertToMappedType(),
    sipForceConvertToMappedType(), sipReleaseMappedType(),
    sipConvertFromMappedType() and sipFindMappedType() have been added to the
    SIP API.
  - sipLong_AsUnsignedLong() has been added, primarily as a workaround for a
    bug in Python v2.3.x and earlier.
  - Added the 't', 'u', 'C' and 'D' format characters to sipParseResult().
  - Added the 't', 'u', 'B', 'C' and 'D' format characters to sipBuildResult().
  - Responsibility for interpreting and implementing the /Transfer/ and
    /TransferBack/ annotations has been pushed down to %ConvertToTypeCode and
    %ConvertFromTypeCode.  The generated type convertors sipForceConvertTo_*()
    and sipConvertFrom_*() have been deprecated.
  - Added the %SIPNoEmitters directive for PyQt4.
  - Added support for the __hash__ Python special method.
  - The __getitem__ Python special method no longer requires %MethodCode.
  - All of the calls to Qt have been moved out of the sip module and into PyQt.
    The generated sipconfig.py file no longer contains any Qt specific
    information.  These changes mean that SIP can support PyQt v3 and v4 at the
    same time.
  - Static methods can now be defined as Qt slots.
  - Removed SIP_BUILD from sip.h.
  - The -c, -l, -q and -x flags to configure.py have been removed.
  - Added the PythonModuleMakefile class to the build system for installing
    pure Python modules.
  - Added the create_wrapper() function to the build system for creating
    platform dependent executable wrappers for Python scripts.
  - Added Configuration.platform to the build system.

v4.3.2 14th November 2005
  - The sipdistutils.py script has contributed by Giovanni Bajo that enables
    SIP extension modules to be built with distutils.

v4.3.1 10th September 2005
  - A bug fix release.

v4.3 30th August 2005
  - The major number of the internal API has changed so it will be necessary
    to regenerate all modules.
  - C structures can now have constructors and a destructor defined so that
    they can be made to behave more Pythonically.
  - %TypeHeaderCode can now be used in namespaces.
  - Added sip.SIP_VERSION_STR.
  - Added support for Python's cyclic garbage collector, %GCTraverseCode and
    %GCClearCode.
  - Deprecated sipTransfer() and sip.transfer().
  - Added sipTransferTo, sipTransferBack(), sip.transferto() and
    sip.transferback().
  - Added support for sipCppRet in %ConvertSubClassCode.
  - Added support for %GetCode and %SetCode for instance variables and
    structure members.
  - Added support for %Exception and %RaiseCode.
  - Added support for __pos__ and __abs__.
  - sip.voidptr instances can now be created from Python.
  - The ascobject() method has been added to sip.voidptr.
  - Added the -c flag to configure.py to explicitly specify the location of
    the qconfig.h file.

v4.2.1 6th March 2005
  - Restored the pre-4.2 behaviour of Python exceptions raised in virtual
    re-implementations.
  - %Timeline can now be used more than once in a module.

v4.2 19th February 2005
  - The /PyName/ annotation can now be applied to classes, namespaces,
    enums, enum members and variables.
  - Added the %PreInitialisationCode directive and is subject to version
    control.  %PostInitialisationCode is now subject to version control.
  - Named enums now have distinct types and so can be differentiated from
    integers in function signatures.
  - The handling of Qt signals has changed so that "foreign" signals (ie.
    those raised by ActiveX controls) can be handled.
  - The voidptr, wrapper and wrappertype types are now exposed in the sip
    module.
  - Virtual and abstract operators are now supported.
  - The __call__ slot no longer requires %MethodCode.
  - Any Python exceptions raised in virtual re-implementations are now
    detected when they occur.
  - sip.cast() can now cast downwards as well as upwards.
  - Added sip.SIP_VERSION.
  - The -k flag to configure.py can now be used to build modules as builtins
    to custom interpreters.
  - The build system now strips modules and only exports the module
    initialisation function by default (when supported by the platform).

v4.1.1 24th September 2004
  - A bug fix release.

v4.1 20th September 2004
  - Added the cast() method to the sip module.
  - Added limited support for protected classes.
  - Added the /Abstract/ class annotation.
  - Added support for typedefs that define pointers to functions.
  - The SIP_PYCALLABLE type now supports the /AllowNone/ annotation.
  - Added support for MSVC.NET to the build system.

v4.0.1 6th July 2004
  - A bug fix release.

v4.0 23rd June 2004
  - The release of SIP v4.
