message: [changelog] 1.6.11
diff: ## Changelog
  +## [v1.6.11](https://github.com/youzan/vant/tree/v1.6.11)
  +`2019-03-22`
  +
  +**Improvements**
  +
  +- Icon: update shop icons [\#3044](https://github.com/youzan/vant/pull/3044)
  +- Button: add hairline prop [\#3031](https://github.com/youzan/vant/pull/3031)
  +- Button: add touchstart event [\#3039](https://github.com/youzan/vant/pull/3039)
  +- Dialog: add getContainer option [\#3040](https://github.com/youzan/vant/pull/3040)
  +- Radio: add click event [\#2990](https://github.com/youzan/vant/pull/2990)
  +- Checkbox: add click event [\#2990](https://github.com/youzan/vant/pull/2990)
  +- NoticeBar: add wrapable prop [\#2992](https://github.com/youzan/vant/pull/2992)
  +- Field: add error-message-align prop [\#3016](https://github.com/youzan/vant/pull/3016)
  +- Sku: support set selectedNum when inited [\#3045](https://github.com/youzan/vant/pull/3045)
  +- Actionsheet: support use slot and cancel-text at same time [\#3021](https://github.com/youzan/vant/pull/3021)
  +
  +**Bug Fixes**
  +
  +- fix Dialog overlay incorrect locate when use getContainer [\#3041](https://github.com/youzan/vant/pull/3041)
  +- fix Swipe text blur in some browsers [\#3030](https://github.com/youzan/vant/pull/3030)
  +- fix Toast should not render overlay when cleared [\#3025](https://github.com/youzan/vant/pull/3025)
  +- fix Steps active-icon prop style error when vertical [\#3007](https://github.com/youzan/vant/pull/3007)
  +- fix Collapse can not expand when clientHeight equals zero [\#2993](https://github.com/youzan/vant/pull/2993)
  +
  +
  ## [v1.6.10](https://github.com/youzan/vant/tree/v1.6.10)
  `2019-03-17`
  