Update dependency to use our fork of odfpy.

 - this is to fix a bug in the odfpy library where it can
   produce non-well-formed XML.

 - note that in order for this requirement to be satisfied, you
   will have to run pip with the --process-dependency-links
   option - or you will have to manually update your requirements
   files to include the location of the forked library.

https://trello.com/c/EgBoNeW9/145-certain-control-characters-in-suppliers-evidence-corrupts-the-ods-that-buyers-download

dmutils/__init__.py

@@ -4,4 +4,4 @@
 import flask_featureflags  # noqa
 
 
-__version__ = '30.0.0'
+__version__ = '30.0.1'

setup.py

@@ -22,6 +22,7 @@
     long_description=__doc__,
     packages=find_packages(),
     include_package_data=True,
+    dependency_links=['git+https://github.com/alphagov/odfpy.git@ee4482a#egg=odfpy-1.3.6dev'],
     install_requires=[
          'Flask-FeatureFlags==0.6',
          'Flask-Script==2.0.5',
@@ -35,7 +36,7 @@
          'mandrill==1.0.57',
          'monotonic==0.3',
          'notifications-python-client==4.1.0',
-         'odfpy==1.3.3',
+         'odfpy==1.3.6dev',
          'python-json-logger==0.1.4',
          'pytz==2015.4',
          'pyyaml==3.11',