Changed all status to start with Uppercase letters, made 3 properties required. Changed all the status to start with Uppercase letters because they are publicly visible. Also changed required=True to False for created_by, modified_by property to allow site admin to create and modify tasks. Also changed required=True to False for history to allow history not to be written until the task is published.

README.txt
coverage.py
setup.py
coverage.egg-info/SOURCES.txt
coverage.egg-info/dependency_links.txt
coverage.egg-info/entry_points.txt
coverage.egg-info/top_level.txt