Log message:
Update py-blockdiag to 0.9.2.

HIstory
=======

0.9.2 (2011-09-30)
------------------
* Add node attribute: textcolor
* Add group attribute: textcolor
* Add edge attribute: textcolor
* Add diagram attributes: default_text_attribute
* Fix beginpoint shape and endpoint shape were reversed
* Fix bugs

0.9.1 (2011-09-26)
------------------
* Add diagram attributes: default_node_color, default_group_color and
  default_line_color
* Fix bugs

0.9.0 (2011-09-25)
------------------
* Add icon attribute to node
* Make transparency to background of PNG images
* Fix bugs

Log message:
Update blockdiag to 0.8.9.

0.8.9 (2011-08-09)
 * Fix bugs
0.8.8 (2011-08-08)
 * Fix bugs

Log message:
Update blockdiag to 0.8.7

0.8.7 (2011-08-06)
 * Fix bugs
0.8.6 (2011-08-01)
 * Support Pillow as replacement of PIL (experimental)
 * Fix bugs
0.8.5 (2011-07-31)
 * Allow dot characters in node_id
 * Fix bugs

Log message:
Import py-blockdiag-0.8.4 as graphics/py-blockdiag.

`blockdiag` generate block-diagram image file from spec-text file.
  * Generate block-diagram from dot like text (basic feature).
  * Multilingualization for node-label (utf-8 only).