Serde based serialization support and misc utilities for working with Dynamodb via the rusoto_dynamodb crate.

Features:

• Automatically convert your types to/from rusoto_dynamodb data types VIA serde_json. This is an alternative to serde_dynamodb (which is mostly unimplemented).
• Query/Conversion Macros

API Example:

```rust use dynamodb_data::*; use std::collections::HashMap;

let payload: HashMap = fields!{ id: ::uuid::Uuid::newv4(), name: "user name", counter: 0 }; let getitemquery = rusotodynamodb::GetItemInput { key: fields!{ id: ::uuid::Uuid::new_v4() }, ..Default::default() }; ```