Fix the unit tests by adding dispatch tables for DateTime and Binary. I'm not convinced this is the right thing to do...  InstanceType makes no sense any longer.
Fix the unit tests by adding dispatch tables for DateTime and Binary.
I'm not convinced this is the right thing to do...  InstanceType makes no sense any longer.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator