message: [changelog] 0.11.7
diff: ## Changelog
  +### [0.11.7](https://github.com/youzan/vant/tree/v0.11.7)
  +`2017-12-07`
  +
  +**Improvements**
  +- Tab: scroll to top when change tab & sticky [\#389](https://github.com/youzan/vant/pull/389) [chenjiahan](https://github.com/chenjiahan)
  +
  +**Bug Fixes**
  +- fix Tab initail tab position [\#389](https://github.com/youzan/vant/pull/389) [chenjiahan](https://github.com/chenjiahan)
  +
  ### [0.11.6](https://github.com/youzan/vant/tree/v0.11.6)
  `2017-12-07`
  