fix python 2 compatible helpers for nested unicode (#19)

BUG FIXES:

- Fix python 2 compatible helpers for nested CJK charset

auto release for 0.9.1 (#17)

auto release for 0.9.0 (#16)

FEATURES:

- Add `ucloudstack` product

ENHANCEMENTS:

- Add `deprecated` decorator

migrate from py3 (#15)

Release/0.8.1 (#14)

FEATURES:

- Add ssl options of client (#14)
- Add `ufs` product (#14)

ENHANCEMENTS:

- Add testing report use ucloud test framework (#14)
- Update `DescribeSubnet` api (#14)

Release/0.6.2 (#13)

ENHANCEMENTS:

- Update fields of `UHost` api
- Add `DescribeIsolationGroup ` of `UHost`
- Add `DescribeUHostInstanceSnapshot` of `UHost`

BUG FIXES:

- Fix fields of `BatchDescribeNewUcdnDomain`

migrate from python3 (#12)

FEATURES:

- add `UCDN` product

ENHANCEMENTS:

- Add toolkit for auto release

fix api of and mark region config is optional (#11)

BUGFIX:

- Mark `region` config is optional
- Update field `CPUSet` at the model `PHostSetSchema`

migrate from python3 (#10)

FEATURE:

- Add `SendUSMSMessage` as public api
- Add `GetUSMSSendReceipt` as public api
- Add `CreateUSMSSignature` as public api
- Add `QueryUSMSSignature` as public api
- Add `UpdateUSMSSignature` as public api
- Add `DeleteUSMSSignature` as public api
- Add `CreateUSMSTemplate` as public api
- Add `QueryUSMSTemplate` as public api
- Add `UpdateUSMSTemplate` as public api
- Add `DeleteUSMSTemplate` as public api

fix utf8 header in documentation (#8)