message: [changelog] 0.12.12
diff: ## Changelog
  +### [0.12.12](https://github.com/youzan/vant/tree/v0.12.12)
  +`2018-03-06`
  +
  +**Improvements**
  +
  +* Swipe: support disable loop [\#670](https://github.com/youzan/vant/pull/670) [@chenjiahan](https://github.com/chenjiahan)
  +* Document: add swipe change event demo [\#666](https://github.com/youzan/vant/pull/666) [@chenjiahan](https://github.com/chenjiahan)
  +* update static source CDN domain [\#652](https://github.com/youzan/vant/pull/652) [@chenjiahan](https://github.com/chenjiahan)
  +
  +**Bug Fixes**
  +
  +* fix Field disabled color in safari [\#669](https://github.com/youzan/vant/pull/669) [@chenjiahan](https://github.com/chenjiahan)
  +* fix Swipe autoplay not stop when value set to 0 [\#660](https://github.com/youzan/vant/pull/660) [@chenjiahan](https://github.com/chenjiahan)
  +
  +
  ### [0.12.11](https://github.com/youzan/vant/tree/v0.12.11)
  `2018-02-27`
  