Merge pull request #1 from stkem/master

Moving all the code over from my personal repo
Merge pull request #2 from stkem/master

Better build.sbt + cleanup
Merge pull request #3 from stkem/master

new and improved package name
Merge pull request #4 from stkem/master

access to message attributes + using AsyncClient
Merge pull request #5 from stkem/master

FormattedSQSQueue and FakeSQSQueue + Docs
Merge pull request #6 from stkem/master

let the user deal with empty queues as they see fit
Merge pull request #7 from stkem/master

big refactor to facilitate inbox queues
Merge pull request #8 from stkem/master

brings documentation up to date
Merge pull request #9 from stkem/master

better error handling
Merge pull request #10 from stkem/master

build.sbt update for publishing to central
Merge pull request #11 from stkem/master

updates doc to include maven central ref.
Make `QueueName` public.
Merge pull request #12 from andrewconner/master

Make `QueueName` public.
updating version for andrews change