bump up aws-sdk-go version

Merge branch 'pointer-anonymous-struct'

update doc on the number of transactions supported

add shortcut for raw AV map marshaling

update aws-sdk-go version

return an error unmarshaling av.L into an array that is too small

optimize byte array marshaling

Scan: support Count

BatchGet: break early given nil Keyed

add more Read and Write info to ConsumedCapacity