Log Message:
Update py-nwdiag to 0.7.0.

History
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0.7.0 (2011-11-19)
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* Accept N/A rack-unit
* Add fontfamily attribute for switching fontface
* Fix bugs

0.6.1 (2011-11-06)
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* [rackdiag] Support multiple racks rendering
* [rackdiag] Add rack attribute: unit-height, weight, ampere, ascending
* [rackdiag] Support putting multiple items to same rack-unit

0.6.0 (2011-11-06)
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* Add rackdiag which supports genarating rack-structure diagram
* Add docutils extension
* Fix bugs

0.5.3 (2011-11-01)
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* Add class feature (experimental)

0.5.2 (2011-11-01)
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* Follow blockdiag-0.9.7 interface

0.5.1 (2011-10-19)
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* Follow blockdiag-0.9.5 interface

0.5.0 (2011-10-07)
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* Change shape of trunkline like a pipeline
* Add network attribute: color
* Add diagram attribute: default_network_color