message: docs(changelog): v3.0.15
diff: @@ -16,6 +16,20 @@ Vant follows [Semantic Versioning 2.0.0](https://semver.org/lang/zh-CN/).
  ## Details
  +### [v3.0.15](https://github.com/youzan/vant/compare/v2.12.14-test...v3.0.15)
  +
  +`2021-04-25`
  +
  +**Feature**
  +
  +- Cascader: add click-tab event [#8606](https://github.com/youzan/vant/issues/8606)
  +
  +**Bug Fixes**
  +
  +- Tab: failed to render during SSR [#8603](https://github.com/youzan/vant/issues/8603)
  +- Rate: select half star correctly when clicked [#8580](https://github.com/youzan/vant/issues/8580)
  +- Tag: incorrect border color when using plain [#8601](https://github.com/youzan/vant/issues/8601)
  +
  ### [v3.0.14](https://github.com/youzan/vant/compare/v3.0.13...v3.0.14)
  `2021-04-18`
  