Added content types handled by each codec
Added tools into timezone aware now methods for both utc and local time
Change model to resource
Merge branch 'master' into development
Merge branch 'development' of github.com:timsavage/odin into development
Pep8 fixes
Fixed bug causing errors, in python < 3.3 a method can not return or yield can only do one or the other
Added not Implemented exceptions to not break doc building
Changed way un_mapped fields are generated, focus should always be on ensuring to fields are auto mapped, not from fields
Added tests for automatic iterators.