Updating changelog
Adding us-gov-west-1 to the Amazon Simple Workflow Service client
Updating changelog
Removing trailing comma from changelog entry
Updating version number
Completed content for the waiters guide
Merge pull request #60 from jeremeamia/feature-more-docs

Completed content for the waiters guide
Changed the DynamoDB ThrottlingErrorChecker to be general and work for all services.
Changed backoffs to ensure TruncatedBackoffStrategy has precedence over ThrottlingErrorChecker
Merge pull request #62 from jeremeamia/feature-throttling-retries

Handle throttling for all services.
Expose the 'gc_operation_delay' config value for the DynamoDB Session Handler
Added 509s to the retry list and improved backoff-related comments
Added a guide for the DynamoDB Session Handler
Made minor updates to DynamoDB Session Handler doc
Added content about the new gc_operation_delay option to the DynamoDB Session Handler guide
Merge pull request #61 from jeremeamia/feature-more-docs

Added a guide for the DynamoDB Session Handler
Updated CHANGELOG to reflect recent changes
Updating installation guide
Fixed issue where services with a global endpoint could have their regions set incorrectly for signing.
Merge pull request #64 from jeremeamia/bugfix-global-endpoints

Fixed signing issue with incorrect region for global services