Hiroki Yoshioka

the function calls `(*CreateTable) add` with `HashKeyType` like below https://github.com/guregu/dynamo/blob/f4c2f4c04076841a3d127e501e6d90b6e629aace/createtable.go#L154 but the `add` func expects `AttributeType` string. https://github.com/guregu/dynamo/blob/f4c2f4c04076841a3d127e501e6d90b6e629aace/createtable.go#L418-L421 I wonder if anyone uses this feature and we cloud drop it...

Migrate to AWS SDK v2

19

Migration to [AWS SDK v2](https://aws.amazon.com/blogs/developer/aws-sdk-for-go-version-2-general-availability/?nc1=h_ls). This PR is based on [@niltonkummer's work](https://github.com/niltonkummer/dynamo/commit/e09a5e71aa90574744c018a8b020bbac96f28379), and I made modifications to pass tests and finish as a PR to the main stream. This version...

what license do you apply to this software?