Log Message:
Update py-blockdiag to 1.1.1.

1.1.1 (2011-11-27)

    * Add node attribute: href (thanks to @r_rudi!)
    * Fix bugs

1.1.0 (2011-11-19)

    * Add shape: square and circle
    * Add fontfamily attribute for switching fontface
    * Fix bugs

1.0.3 (2011-11-13)

    * Add plugin: attributes
    * Change plugin syntax; (cf. plugin attributes [attr = value, attr, value])
    * Fix bugs

1.0.2 (2011-11-07)

    * Fix bugs

1.0.1 (2011-11-06)

    * Add group attribute: shape
    * Fix bugs

1.0.0 (2011-11-04)

    * Add node attribute: linecolor

    * Rename diagram attributes:
            * fontsize -> default_fontsize
            * default_line_color -> default_linecolor
            * default_text_color -> default_textcolor

    * Add docutils extention

    * Fix bugs

0.9.7 (2011-11-01)

    * Add node attribute: fontsize
    * Add edge attributes: thick, fontsize
    * Add group attribute: fontsize
    * Change color of shadow in PDF mode
    * Add class feature (experimental)
    * Add handler-plugin framework (experimental)

0.9.6 (2011-10-22)

    * node.style supports dashed_array format style
    * Fix bugs

0.9.5 (2011-10-19)

    * Add node attributes: width and height
    * Fix bugs

0.9.4 (2011-10-07)

    * Fix bugs

0.9.3 (2011-10-06)

    * Replace SVG core by original's (simplesvg.py)
    * Refactored
    * Fix bugs