Rabbyt

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* License changed to MIT.

* Added add_time() function.

* Time is stored internally as ``float`` instead of ``int``. This allows for
optionally using seconds instead of milliseconds.

* Added exponential, cosine, and sine interpolation.

* Documented rabbyt.anims__ quite a bit better.

__ http://matthewmarshall.org/projects/rabbyt/docs/rabbyt/anims/

* Forced Pyrex version 0.9.5 or greater, to prevent segfaults when using
weakrefs. (It still can be compiled without pyrex.)

* Added more hacks for building on MacOS. Hopefully it'll all go smooth now.

* Deprecated the Basic1 and Basic2 physics classes.

* HTML documentation is now included in the source distribution.

* Added missing documentation for ``VertexArray.texture_id``.

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* Sprites can be scaled independently on their x and y axes.

* Added left, right, top, and bottom properties to Sprite.

* Fixed bug with some sprites being drawn upside-down when rotated.

* Fixed c, pyx, and pxd files being installed.

* Added a small function for integrating with the chipmunk/pymunk physics lib.

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* c source files are included, so Pyrex is not needed for building.

* Renamed the ``DV``\* classes to ``Anim``\*. (This is mostly internal and
shouldn't affect anyone.)

* MANY fixes and improvements to font rendering. (As in, it's actually
useful now!)

* Lots of docstrings added and improved.

* ``pygame_load_texture()`` now takes ``filter`` and ``mipmap`` arguments,
which are passed on to ``load_texture()``.

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* Fixed compiling on MS Windows.

* Added some simple helpers for physics simulation.

* Moved all non-rendering code out of ``Sprite`` and into ``BaseSprite``.

* Added font rendering support.

* Using color data in ``VertexArray`` rendering is now optional.

* ``VertexArray`` can now optionally bind a texture before rendering.

* Fixed a bug with ``VertexArray`` barfing when not given all the data for
a vertex, instead of using defaults.

* Fixed a segfault when trying to load a texture before initializing the
OpenGL context.

* Switched ``DVProxy`` and ``DVPyFunc`` to not cache by default. (Premature
optimization is the root of all evil.)

* All examples now respond to window events nicely.

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* Added ``DVProxy`` and ``DVPyFunc`` classes. (Assigning a function to a sprite
property creates a ``DVPyFunc`` transparently.)

* Added basic arithmetic operations for DV classes.

* Added ``Sprite.attrgetter()`` for super fast property access.

* Changed ``rabbyt.collisions.rdc()`` to not return groups with only one object.

* Added a number of introductory examples, showing the basic features.

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* Added vertex array rendering.

* Added collision detection.

* Lots of docstrings added/improved.

* Added ``rgb`` property to ``Sprite``.