If type_info is None (can happen if Image is about to be pasted), simply return. Refs #52
Added test fixture for testing DX-based content. Copied test_cropping tests to DX. Refs #52
Note: test_modify_context is failing, see #54
IMHO enforcing E501 is really un-pythonic, but if the package maintainers want it...
rename testcases and factor out test for chaning image data
flake 8
do not add maker for all dexteritycontent automatically (we don't do this for archetypes either) but use behaviour
fails even if we upate to plone.scale 1.3.4 - skip it so we can close #52
flake8
just for triggering travis...
Merge pull request #53 from collective/52-dx-copy-paste

Refs #52: Fix error in copy & paste for dexterity image types