Log Message:
Update py-seqdiag to 0.7.1.

        History
        =======

        0.7.1 (2011-11-30)
        ------------------
        * Fix bugs

        0.7.0 (2011-11-19)
        ------------------
        * Add fontfamily attribute for switching fontface
        * Fix bugs

        0.6.3 (2011-11-06)
        ------------------
        * Add docutils extention
        * Fix bugs

        0.6.2 (2011-11-01)
        ------------------
        * Add class feature (experimental)

        0.6.1 (2011-11-01)
        ------------------
        * Follow blockdiag-0.9.7 interface

        0.6.0 (2011-10-28)
        ------------------
        * Add edge attributes: note, rightnote, leftnote, notecolor
        * Add diagram atteribute: default_note_color

        0.5.2 (2011-10-27)
        ------------------
        * Implement auto edge height adjusting
        * Fix bugs

        0.5.1 (2011-10-24)
        ------------------
        * Fix bugs

        0.5.0 (2011-10-21)
        ------------------
        * Add diagram attributes: activation, autonumber
        * Add edge attribute: failed
        * Add separator syntax

        0.4.3 (2011-10-19)
        ------------------
        * Follow blockdiag-0.9.5 interface

        0.4.2 (2011-10-11)
        ------------------
        * Fix bugs