Remove MIME type registrations (Plone > 4.1 comes with a fairly complete set already), PEP8, pyflakes.
Fix interface to be compatible with Plone 4.x, pyflakes, pep8.
Add another transform registration that seems to be necessary according to docs.
Use new approach to init tests, make sure profiles are executed on test startups.
Shorten transform registration.
Temporarily disable most transforms, as they are still not in Plone4.x state.