Set up my first unit test\!  (Man the documentation for Plone testing is daunting\!)
Added a few more simple tests.
Added Plone as requirement to get testing working.
Added a method to prepare a vanilla Plone site for import by removing the events and news folders.
Changed HTTP status handling to allow any 2xx status.
Added a check right before object is created on new site which triggers an ObjectAlreadyExistsError if it's already there.