Fixed up __str__ method on user
Added get_lineage and kind methods to DynamoModel
Added a "LocalQuery" object which lets us use a regular Iterator as a
Query response
DynamoModel compatibility with standard models, adds support for custom
keyword arguments, optional hash_key, and the ability to set attributes
and have those saved to Dynamo.
Revert "Fixed up __str__ method on user"

This reverts commit 68c9aa66a8516a4c67cb22b037b30b8362e9d459.
Merge branch 'feature/dynamo-model-improvements' into develop