fix schema request params error (#11) 

improving unit test for core modules (#9) FEATURE: - Add testing framework supported `scenario` and `step`, inspire by *ThoughtWorks, Guage* (#9) ENHANCEMENT: - Add unit testing cases to improving line coverage at core modules. (#9) - Improved CI workflow. (#9) BUGFIX: - Fix JSON decoding error for py3.5. (#9)

Add stepflow sdk (#8) FEATURE: - Add the SDK of `StepFlow` product (#8) BUGFIX: - Fix the `NoneType` error for `RetCodeException` (#8)

enhancement schema for response case-insensitive and miss key (#7) FEATURE: - Set zero-value as the default value for container types (list, dict) (#7) - Add case-insensitive converting at the schema (#7) - Add non-strict mode for the type system (#7)

fix eip typo and object schema (#6) BUGFIX: - Fix the typo of automatic generating (such as `eip`, `vip`), and compatible with the old version (#6) - Fix object schema class to object (such as `unet` schema) (#6)

improve documentation and http transport (#5) ENHANCEMENT: - Improve documentation: add response fields and models to service documentation (#5) BUGFIX: - Fix transport keywork arguments has no-effected error, add user-agent to default headers (#5)

compitable for python2 migration (#4) ENHANCEMENT: - Provide static code analysis tools with ast transformer to sync python 3 sdk implementation to python 2 (#4) - Improve validation error message (#4) - Add client-level logger (#4)

initial services