Fold in impl of AWs elastic transcoder API from external repo.
Update cabal file to build folded in Sign4 and ElasticTranscoder modules.
Core HTTP endpoint refactored to a module.
Moved AWS version 4 signing logic under Core namespace.
Refactored Endpoint and Credential logic as modules.
Core Aws Endpoint and Protocol logic.
Refactored out core Aws Time and Sign modules.
Refactor out Aws v3 signature algo.
Checkpoint to switch Swf spike ListDomains call to use v3 signing.
Two Simple SWF commands working, ListDomains, DescribeDomain.
Import cleanups.
Workflow Decision and Task APIs.
Parsing of Decision Event Attributes.
Fixed json field names (no prefixes) for Decision Events.
Add new Event module to cabal.
Move HistoryEvent data types to Event.hs
Activity Decision decider api data structures.
New Aws utility invoker api allowing for passing a Manager.
Tighten up exports.
Amzn requires rfc822 dates to have leading zero on day value.