FEATURE: Structure input data around model/version

[colemanja91]

Current input accepts and validates against one dictionary of data fields. Add functionality to break this down by model and version; i.e.:

{
    "model1": {
        "001": {
            "field1": "test"
            },
        "002": {
            "field2": "test2"
        }
    },
    "model2": {
        "001": {
            "field3": "test3"
        }
    }
}

[colemanja91]

Changed in v0.0.3