message: [changelog] 2.0.0-beta.4
diff: # Changelog
  +### [v2.0.0-beta.4](https://github.com/youzan/vant/tree/v2.0.0-beta.4)
  +`2019-06-05`
  +
  +##### Checkbox
  +
  +- Fix `label-position` prop not work
  +
  +##### Field
  +
  +- Add `click` event
  +- Add `clickable` prop
  +
  +##### Radio
  +
  +- Fix `label-position` prop not work
  +
  +##### Stepper
  +
  +- Support `Number` type of `input-width` prop
  +
  +##### SwipeCell
  +
  +- Fix render error when one side is empty
  +
  +##### Uploader
  +
  +- Support bind `v-model`
  +- Add `max-count` prop
  +- Add `preview-size` prop
  +- Add `preview-image` prop
  +
  +
  ### [v2.0.0-beta.3](https://github.com/youzan/vant/tree/v2.0.0-beta.3)
  `2019-05-31`
  