DynamoDB: DeleteItem command and a number of smaller enhancements

- Operational DeleteItem command (needs testsuite)
- An experimental FromDynItem and ToDynItem interface, a-la aeson
- A few missing exports and some performance fixes
- More general awsIteratedSource/List implementation

One TODO item left is to rewrite the existing awsIteratedSource/List functions in terms of the more general versions created here. 
I wouldn't spend any manual effort either, but certainly enjoy it when
stylish-haskell does it automatically for me in an after-save hook. :)

On Sun, Sep 14, 2014 at 2:12 PM, Aristid Breitkreuz <
notifications@github.com> wrote:

> In Aws/Aws.hs:
>
> >          -- | AWS access credentials.
> >        , credentials :: Credentials
> >          -- | The error / message logger.
> > -      , logger :: Logger
> > +      , logger      :: Logger
>
> Especially this is unnecessary. I do *not* really want alignment for my
> record fields.
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/aristidb/aws/pull/133/files#r17521418>.
>