cairomm release 0.5.0 now available

[Jonathon Jongsma <jonathon jongsma gmail com>]

A new cairomm release 0.5.0 is now available from:

        http://cairographics.org/releases/cairomm-0.5.0.tar.gz

    which can be verified with:

        http://cairographics.org/releases/cairomm-0.5.0.tar.gz.sha1
        cf6592ab149695574b0b63260169d488a52db48c  cairomm-0.5.0.tar.gz

        http://cairographics.org/releases/cairomm-0.5.0.tar.gz.sha1.asc
        (signed by Jonathon Jongsma)


Changes since 0.4.0:
* Surface:
  - Created derived classes for PDF, PS, SVG, Glitz,
  X11 and Win32 surfaces, which are only available if your copy
  of cairo supports those surfaces. The X11 and Win32 Surface headers
  must be #included explicitly.
  - Added write_to_png() and write_to_png_stream(), available when PNG
  support is available in Cairo.
* Examples: Added PNG, PDF, PS, and SVG Surface examples.
* Added API documentation