message: docs(changelog): 3.1.0-beta.0
diff: @@ -16,6 +16,21 @@ Vant follows [Semantic Versioning 2.0.0](https://semver.org/lang/zh-CN/).
  ## Details
  +### [v3.1.0-beta.0](https://github.com/youzan/vant/compare/v3.0.18...v3.1.0-beta.0)
  +
  +`2021-06-14`
  +
  +**New Component**
  +
  +- add [ConfigProvider](/#/en-US/config-provider) Component [#8854](https://github.com/youzan/vant/issues/8854)
  +
  +**Feature**
  +
  +- all components support CSS Variables [aef257](https://github.com/youzan/vant/commit/aef2579a95da7c8b528ba7062b227fea698a0487) [fe1cba](https://github.com/youzan/vant/commit/fe1cba97b796eba7e9b5dca0ce4ab0d1de95715c)
  +- add more CSS Variables [#8861](https://github.com/youzan/vant/issues/8861)
  +- Checkbox: icon slot add disabled param [#8839](https://github.com/youzan/vant/issues/8839)
  +- IndexBar: add teleport prop [#8820](https://github.com/youzan/vant/issues/8820)
  +
  ### [v3.0.18](https://github.com/youzan/vant/compare/v3.0.17...v3.0.18)
  `2021-06-03`
  