message: [changelog] 0.10.4
diff: ## Changelog
  +## [0.10.4](https://github.com/youzan/vant/tree/v0.10.4)
  +`2017-10-26`
  +
  +**Improvements**
  +- add more icons [\#253](https://github.com/youzan/vant/pull/253) [@pangxie1991](https://github.com/pangxie1991)
  +- add document of custom theme [\#251](https://github.com/youzan/vant/pull/251) [@chenjiahan](https://github.com/chenjiahan)
  +- add click feedback of buttons in components [\#248](https://github.com/youzan/vant/pull/248) [@chenjiahan](https://github.com/chenjiahan)
  +- add more props of NoticeBar [\#254](https://github.com/youzan/vant/pull/254) [@chenjiahan](https://github.com/chenjiahan)
  +
  +**Bug Fixes**
  +- fix Swipe width calc error [\#258](https://github.com/youzan/vant/pull/258) [@chenjiahan](https://github.com/chenjiahan)
  +- fix PullRefreash scroll bug when parent is scrollable [\#247](https://github.com/youzan/vant/pull/247) [@GeoffZhu](https://github.com/GeoffZhu)
  +- fix CouponList empty info display bug [\#246](https://github.com/youzan/vant/pull/246) [@chenjiahan](https://github.com/chenjiahan)
  +
  ### [0.10.3](https://github.com/youzan/vant/tree/v0.10.3)
  `2017-10-25`
  