Log Message:
Update py-flask-script to 0.6.5.

Version 0.6.5
-----------------

Released on December 5, 2013

- Change warning from UserWarning to DeprecationWarning so it is
  ignored by default

Version 0.6.4
-----------------

Released on December 5, 2013

- Only pass `parents` argument if a command's `create_parser`
  accepts it.  Workaround for #71