Incompatible with 0.11.6 rc 1

[anonymous]

It appears this plugin is incompatible with 0.11.6 rc1

When going to create a ticket with this plugin enabled (regardless of what settings are set for the plugin) the following error is thrown

2009-11-25 12:25:33,587 Trac[main] ERROR: Internal Server Error: 
Traceback (most recent call last):
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.11.6rc1-py2.6.egg/trac/web/main.py", line 450, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.11.6rc1-py2.6.egg/trac/web/main.py", line 227, in dispatch
    data, content_type)
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.11.6rc1-py2.6.egg/trac/web/chrome.py", line 739, in render_template
    stream |= self._filter_stream(req, method, filename, stream, data)
  File "build/bdist.linux-x86_64/egg/genshi/core.py", line 128, in __or__
    return Stream(_ensure(function(self)), serializer=self.serializer)
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.11.6rc1-py2.6.egg/trac/web/chrome.py", line 842, in inner
    data)
  File "build/bdist.linux-x86_64/egg/blackmagic/blackmagic.py", line 55, in filter_stream
    if disabled or istrue(self.config.get('blackmagic', '%s.disable' % field, False)):
  File "build/bdist.linux-x86_64/egg/blackmagic/blackmagic.py", line 13, in istrue
    if v.lower() in ('yes', 'true', '1', 'on'):
AttributeError: 'bool' object has no attribute 'lower'

[anonymous]

I've found a fix.

On line 13 change if v.lower() in ('yes', 'true', '1', 'on'): to if str(v).lower() in ('yes', 'true', '1', 'on'):

[obs]

(In [7197]) Ensured when checking if value is true compared value is a string, fixes #6257