message: [changelog] 2.0.0-beta.5
diff: # Changelog
  +### [v2.0.0-beta.5](https://github.com/youzan/vant/tree/v2.0.0-beta.5)
  +`2019-06-10`
  +
  +##### ActionSheet
  +
  +- Add `click-overlay` event
  +
  +##### Field
  +
  +- Add `input` slot
  +
  +##### Image
  +
  +- Fix can not display loading status when use lazy-load prop
  +
  +##### Toolbar
  +
  +- Add `toolbar-position` prop
  +
  +
  ### [v2.0.0-beta.4](https://github.com/youzan/vant/tree/v2.0.0-beta.4)
  `2019-06-05`
  