Log message:
Update to 0.20.2:

0.20.2 (2014-06-16)
===================

Features added
--------------

* Some optimisations for set/frozenset instantiation.

* Support for C++ unordered_set and unordered_map.

Bugs fixed
----------

* Access to attributes of optimised builtin methods (e.g.
  ``[].append.__name__``) could fail to compile.

* Memory leak when extension subtypes add a memory view as attribute
  to those of the parent type without having Python object attributes
  or a user provided dealloc method.

* Compiler crash on readonly properties in "binding" mode.

* Auto-encoding with ``c_string_encoding=ascii`` failed in Py3.3.

* Crash when subtyping freelist enabled Cython extension types with
  Python classes that use ``__slots__``.

* Freelist usage is restricted to CPython to avoid problems with other
  Python implementations.

* Memory leak in memory views when copying overlapping, contiguous slices.

* Format checking when requesting non-contiguous buffers from
  ``cython.array`` objects was disabled in Py3.

* C++ destructor calls in extension types could fail to compile in clang.

* Buffer format validation failed for sequences of strings in structs.

* Docstrings on extension type attributes in .pxd files were rejected.

Log message:
Update to 0.20.1:

===================
0.20.1 (2014-02-11)
===================

Bugs fixed
----------

* List/Tuple literals multiplied by more than one factor were only multiplied
  by the last factor instead of all.

* Lookups of special methods (specifically for context managers) could fail
  in Python <= 2.6/3.1.

* Local variables were erroneously appended to the signature introspection
  of Cython implemented functions with keyword-only arguments under Python 3.

* In-place assignments to variables with inferred Python builtin/extension
  types could fail with type errors if the result value type was incompatible
  with the type of the previous value.

* The C code generation order of cdef classes, closures, helper code,
  etc. was not deterministic, thus leading to high code churn.

* Type inference could fail to deduce C enum types.

* Type inference could deduce unsafe or inefficient types from integer
  assignments within a mix of inferred Python variables and integer
  variables.

Log message:
Fix packaging when py-setuptools is installed by just switching to it
completely and adapting the package.
Replace patch-aa with post-install target.
Fix interpreter path in installed file.
Bump PKGREVISION.

Addresses PR pkg/48602 by Hauke Fath.

Log message:
Update to 0.20:

0.20 (??)
===================

Features added
--------------

* Support for CPython 3.4.

* Support for calling C++ template functions.

* ``yield`` is supported in ``finally`` clauses.

* The C code generated for finally blocks is duplicated for each exit
  case to allow for better optimisations by the C compiler.

* Cython tries to undo the Python optimisationism of assigning a bound
  method to a local variable when it can generate better code for the
  direct call.

* Constant Python float values are cached.

* String equality comparisons can use faster type specific code in
  more cases than before.

* String/Unicode formatting using the '%' operator uses a faster
  C-API call.

* ``bytearray`` has become a known type and supports coercion from and
  to C strings.  Indexing, slicing and decoding is optimised. Note that
  this may have an impact on existing code due to type inference.

* Using ``cdef basestring stringvar`` and function arguments typed as
  ``basestring`` is now meaningful and allows assigning exactly
  ``str`` and ``unicode`` objects, but no subtypes of these types.

* Support for the ``__debug__`` builtin.

* Assertions in Cython compiled modules are disabled if the running
  Python interpreter was started with the "-O" option.

* Some types that Cython provides internally, such as functions and
  generators, are now shared across modules if more than one Cython
  implemented module is imported.

* The type inference algorithm works more fine granular by taking the
  results of the control flow analysis into account.

* A new script in ``bin/cythonize`` provides a command line frontend
  to the cythonize() compilation function (including distutils build).

* The new extension type decorator ``@cython.no_gc_clear`` prevents
  objects from being cleared during cyclic garbage collection, thus
  making sure that object attributes are kept alive until deallocation.

* During cyclic garbage collection, attributes of extension types that
  cannot create reference cycles due to their type (e.g. strings) are
  no longer considered for traversal or clearing.  This can reduce the
  processing overhead when searching for or cleaning up reference cycles.

* Package compilation (i.e. ``__init__.py`` files) now works, starting
  with Python 3.3.

* The cython-mode.el script for Emacs was updated.  Patch by Ivan Andrus.

* An option common_utility_include_dir was added to cythonize() to save
  oft-used utility code once in a separate directory rather than as
  part of each generated file.

* ``unraisable_tracebacks`` directive added to control printing of
  tracebacks of unraisable exceptions.

Bugs fixed
----------

* Abstract Python classes that subtyped a Cython extension type
  failed to raise an exception on instantiation, and thus ended
  up being instantiated.

* ``set.add(a_tuple)`` and ``set.discard(a_tuple)`` failed with a
  TypeError in Py2.4.

* The PEP 3155 ``__qualname__`` was incorrect for nested classes and
  inner classes/functions declared as ``global``.

* Several corner cases in the try-finally statement were fixed.

* The metaclass of a Python class was not inherited from its parent
  class(es).  It is now extracted from the list of base classes if not
  provided explicitly using the Py3 ``metaclass`` keyword argument.
  In Py2 compilation mode, a ``__metaclass__`` entry in the class
  dict will still take precedence if not using Py3 metaclass syntax,
  but only *after* creating the class dict (which may have been done
  by a metaclass of a base class, see PEP 3115).  It is generally
  recommended to use the explicit Py3 syntax to define metaclasses
  for Python types at compile time.

* The automatic C switch statement generation behaves more safely for
  heterogeneous value types (e.g. mixing enum and char), allowing for
  a slightly wider application and reducing corner cases.  It now always
  generates a 'default' clause to avoid C compiler warnings about
  unmatched enum values.

* Fixed a bug where class hierarchies declared out-of-order could result
  in broken generated code.

* Fixed a bug which prevented overriding const methods of C++ classes.

* Fixed a crash when converting Python objects to C++ strings fails.

Other changes
-------------

* In Py3 compilation mode, Python2-style metaclasses declared by a
  ``__metaclass__`` class dict entry are ignored.

* In Py3.4+, the Cython generator type uses ``tp_finalize()`` for safer
  cleanup instead of ``tp_del()``.

Log message:
Mark packages as not ready for python-3.x where applicable;
either because they themselves are not ready or because a
dependency isn't. This is annotated by
PYTHON_VERSIONS_INCOMPATIBLE=  33 # not yet ported as of x.y.z
or
PYTHON_VERSIONS_INCOMPATIBLE=  33 # py-foo, py-bar
respectively, please use the same style for other packages,
and check during updates.

Use versioned_dependencies.mk where applicable.
Use REPLACE_PYTHON instead of handcoded alternatives, where applicable.
Reorder Makefile sections into standard order, where applicable.

Remove PYTHON_VERSIONS_INCLUDE_3X lines since that will be default
with the next commit.

Whitespace cleanups and other nits corrected, where necessary.

Log message:
Update to 0.19.2:

0.19.2 (2013-10-13)
===================

Bugs fixed
----------

* Some standard declarations were fixed or updated, including the previously
  incorrect declaration of ``PyBuffer_FillInfo()`` and some missing bits in
  ``libc.math``.

* Heap allocated subtypes of ``type`` used the wrong base type struct at the
  C level.

* Calling the unbound method dict.keys/value/items() in dict subtypes could
  call the bound object method instead of the unbound supertype method.

* "yield" wasn't supported in "return" value expressions.

* Using the "bint" type in memory views lead to unexpected results.
  It is now an error.

* Assignments to global/closure variables could catch them in an illegal state
  while deallocating the old value.

Log message:
Update to 0.19.1:

0.19.1 (2013-05-11)
===================

Features added
--------------

* Completely empty C-API structs for extension type slots (protocols like
  number/mapping/sequence) are no longer generated into the C code.

* Docstrings that directly follow a public/readonly attribute declaration
  in a cdef class will be used as docstring of the auto-generated property.
  This fixes ticket 206.

* The automatic signature documentation tries to preserve more semantics
  of default arguments and argument types.  Specifically, ``bint`` arguments
  now appear as type ``bool``.

* A warning is emitted when negative literal indices are found inside of
  a code section that disables ``wraparound`` handling.  This helps with
  fixing invalid code that might fail in the face of future compiler
  optimisations.

* Constant folding for boolean expressions (and/or) was improved.

* Added a build_dir option to cythonize() which allows one to place
  the generated .c files outside the source tree.

Bugs fixed
----------

* ``isinstance(X, type)`` failed to get optimised into a call to
  ``PyType_Check()``, as done for other builtin types.

* A spurious "from datetime cimport *" was removed from the \ 
"cpython"
  declaration package. This means that the "datetime" declarations
  (added in 0.19) are no longer available directly from the "cpython"
  namespace, but only from "cpython.datetime". This is the correct
  way of doing it because the declarations refer to a standard library
  module, not the core CPython C-API itself.

* The C code for extension types is now generated in topological order
  instead of source code order to avoid C compiler errors about missing
  declarations for subtypes that are defined before their parent.

* The ``memoryview`` type name no longer shows up in the module dict of
  modules that use memory views.  This fixes trac ticket 775.

* Regression in 0.19 that rejected valid C expressions from being used
  in C array size declarations.

* In C++ mode, the C99-only keyword ``restrict`` could accidentally be
  seen by the GNU C++ compiler. It is now specially handled for both
  GCC and MSVC.

* Testing large (> int) C integer values for their truth value could fail
  due to integer wrap-around.

Other changes
-------------

Log message:
Fix PLIST for python2.6.

Log message:
Update to 0.19:

0.19 (2013-04-19)
=================

Features added
--------------

* New directives ``c_string_type`` and ``c_string_encoding`` to more easily
  and automatically convert between C strings and the different Python string
  types.

* The extension type flag ``Py_TPFLAGS_HAVE_VERSION_TAG`` is enabled by default
  on extension types and can be disabled using the ``type_version_tag`` compiler
  directive.

* EXPERIMENTAL support for simple Cython code level line tracing.  Enabled by
  the "linetrace" compiler directive.

* Cython implemented functions make their argument and return type annotations
  available through the ``__annotations__`` attribute (PEP 3107).

* Access to non-cdef module globals and Python object attributes is faster.

* ``Py_UNICODE*`` coerces from and to Python unicode strings.  This is
  helpful when talking to Windows APIs, which use compatible wchar_t
  arrays for strings.  Note that the ``Py_UNICODE`` type is otherwise
  deprecated as of CPython 3.3.

* ``isinstance(obj, basestring)`` is optimised.  In Python 3 it only tests
  for instances of ``str`` (i.e. Py2 ``unicode``).

* The ``basestring`` builtin is mapped to ``str`` (i.e. Py2 ``unicode``) when
  compiling the generated C code under Python 3.

* Closures use freelists, which can speed up their creation quite substantially.
  This is also visible for short running generator expressions, for example.

* A new class decorator ``@cython.freelist(N)`` creates a static freelist of N
  instances for an extension type, thus avoiding the costly allocation step if
  possible. This can speed up object instantiation by 20-30% in suitable
  scenarios. Note that freelists are currently only supported for base types,
  not for types that inherit from others.

* Fast extension type instantiation using the ``Type.__new__(Type)`` idiom has
  gained support for passing arguments.  It is also a bit faster for types defined
  inside of the module.

* The Python2-only dict methods ``.iter*()`` and ``.view*()`` (requires Python 2.7)
  are automatically mapped to the equivalent keys/values/items methods in Python 3
  for typed dictionaries.

* 2-value slicing of unknown objects passes the correct slice when the ``getitem``
  protocol is used instead of the ``getslice`` protocol (especially in Python 3),
  i.e. ``None`` values for missing bounds instead of ``[0,maxsize]``.  It is also
  a bit faster in some cases, e.g. for constant bounds.  This fixes trac ticket 636.

* Slicing unicode strings, lists and tuples is faster.

* list.append() is faster on average.

* ``raise Exception() from None`` suppresses the exception context in Py3.3.

* Py3 compatible ``exec(tuple)`` syntax is supported in Py2 code.

* Keyword arguments are supported for cdef functions.

* External C++ classes can be declared nogil.  Patch by John Stumpo.  This fixes
  trac ticket 805.

Bugs fixed
----------

* Cascaded assignments of None values to extension type variables failed with
  a ``TypeError`` at runtime.

* The ``__defaults__`` attribute was not writable for Cython implemented
  functions.

* Default values of keyword-only arguments showed up in ``__defaults__`` instead
  of ``__kwdefaults__`` (which was not implemented).  Both are available for
  Cython implemented functions now, as specified in Python 3.x.

* ``yield`` works inside of ``with gil`` sections.  It previously lead to a crash.
  This fixes trac ticket 803.

* Static methods without explicitly named positional arguments (e.g. having only
  ``*args``) crashed when being called.  This fixes trac ticket 804.

* ``dir()`` without arguments previously returned an unsorted list, which now
  gets sorted as expected.

* ``dict.items()``, ``dict.keys()`` and ``dict.values()`` no longer return lists
  in Python 3.

* Exiting from an ``except-as`` clause now deletes the exception in Python 3 mode.

* The declarations of ``frexp()`` and ``ldexp()`` in ``math.pxd`` were incorrect.

Log message:
Update to 0.18:

0.18 (2013-01-28)
=================

Features added
--------------

* Named Unicode escapes ("\N{...}") are supported.

* Python functions/classes provide the special attribute "__qualname__"
  as defined by PEP 3155.

* Added a directive ``overflowcheck`` which raises an OverflowException when
  arithmetic with C ints overflow.  This has a modest performance penalty, but
  is much faster than using Python ints.

* Calls to nested Python functions are resolved at compile time.

* Type inference works across nested functions.

* ``py_bytes_string.decode(...)`` is optimised.

* C ``const`` declarations are supported in the language.

Bugs fixed
----------

* Automatic C++ exception mapping didn't work in nogil functions (only in
  "with nogil" blocks).