- fixes unlabel function to use array params instead of private variables.
- adds support for v204 of Sift Science's APIs
- adds Workflow Status API, User Decisions API, Order Decisions API
- v204 APIs are now called by default -- this is an incompatible change (use :version => 203 to call the previous API version)
- uses Hash arg for optional params in Client methods -- incompatible change
- Add return_action support to track method
- Add TravisCI
- Code cleanups
- Added Unlabel functionality
- Fixed minor bugs
- Fixed minor bugs with constant variables