- Updated the account report class to support the proper search filters
- Updated the account report spec to test for the new search parameter types
- Update post_report with a utility method to make the request data object construction easier
- Generalized the parameter requirements a bit for all report types
- Now allowing nil for the search parameters in each report type.
- The Report class no longer raises an exception if no search_filter is supplied. It now defaults the @sfa class variable to an empty array.