message: docs(changelog): 2.2.10
diff: # Changelog
  +### [v2.2.10](https://github.com/youzan/vant/tree/v2.2.10)
  +`2019-10-27`
  +
  +**Features**
  +
  +- Icon: add font-display auto property [\#4831](https://github.com/youzan/vant/pull/4831)
  +- Popup: add close-on-popstate prop [\#4845](https://github.com/youzan/vant/pull/4845)
  +- Picker: add swipe-duration prop [\#4816](https://github.com/youzan/vant/pull/4816)
  +- Toast: support set default options of specfic type [\#4848](https://github.com/youzan/vant/pull/4848)
  +
  +**Bug Fixes**
  +
  +- fix Uploader file preview border radius [\#4846](https://github.com/youzan/vant/pull/4846)
  +- fix DatetimePicker incorrecrt initial value when use min-date and filter [\#4837](https://github.com/youzan/vant/pull/4837)
  +
  +
  ### [v2.2.9](https://github.com/youzan/vant/tree/v2.2.9)
  `2019-10-20`
  