work in progress with UDT tests
implemented udt datatype tests
cleanup
merge conflicts
shortened params using*
Add nested tuple tests
programmatically create data and insert
Correct import in example for `tuple_factory`.
programmatically automated type creation
enumerate, instead of separate var
Add a test for tuples with non-primitive subtypes
tests for non-primitive datatypes for UDTs
Test Nested UDTs
Add value to the namedtuple
Merge pull request #158 from lenards/master

Correct import in example for `tuple_factory`.
Test for ensuring extra-lengthy udts are handled correctly.
Remove unused import
Update future test case descriptions
Merge pull request #157 from joaquincasares/nested_tuple_test

Add nested tuple tests
Handle custom encoders in nested data types

The root of the problem was that nested data types would use the default
encoders for subitems.  When the encoders were customized, they would
not be used for those nested items.

This fix moves the encoder functions into a class so that collections,
tuples, and UDTs will use the customized mapping when encoding subitems.

Fixes PYTHON-100.