Aggdraw

- Fixed rendering of symbols containing nested polygons (broken in
1.1b3).

- Added 'coords' method to the Path type. This returns the current
path as a polyline. If the path consists of multiple path fragments,
the return value is undefined. (experimental)

- The Windows installer now uses Freetype 2.1.10. This seems to fix
the issue with irregular baselines reported for some fonts.

- Performance: changes to how and when drawing adapters are created,
and proper clipping in the rasterizer can result in massive speedups
for some applications.

- Added experimental 'setantialias' method to the drawing context.
Pass in 0 to disable antialiasing, 1 to enable it. Antialiasing
is enabled by default.

- Adjust the size of filled objects (including polygons) depending
on the pen width. If no pen is used, filled antialiased objects
are expanded by a half pixel, to avoid banding. If a pen is used,
the objects are shrunk by a half pen width. (experimental)

- Fixed background color bug for non-RGBA images. The third
argument to the Draw constructor now works properly for all
modes.

- Fixed big resource leak in the Draw(im) constructor. The alternate
form (Draw(mode, size)) does not leak (reported by H�kan Karlsson).

- Added Path object. Path objects can be used instead of coordinates
with the 'line' and 'polygon' primitives. Path objects can also be
used as symbols.

- Use ImageColor.getrgb to resolve colors, if available.