matplotlib Code

include GEOS library source code

Fix flush callback in PNG file-like object writing.

Refactored a bunch of places to use "is_writable_file_like".

fixed is_string_like and removed is_file_like

Fix placement of rotated text in Wx backend (thanks Michael Day).

New path-related utilities (used for an aborted attempt at fixing
contouring -- may be useful in other contexts in the future).

Build the path module (inadvertently removed during a merge).

Update to use new numpy macros.

Fix alignment of clipping rectangles.

Fix bug in PDF backend.