Removed output.py
Renamed null mock objects.
Added file_exists method to Folder.
Added filename date format.
Combined all actions into one module.
Renamed action_performer to actionmanager.py
Removed actions package.
Improved exception handling when doing actions.
Added classes for storing data for specific actions.
Added parsers for message, accounting action, and body compositon action.
Added append_line method and empty method to File.
Added filename property to File.
Added a LogWriter to note and body composition actions.