Merge branch 'v2.9' into dev

docs/markdown/changelog.en-US.md

@@ -44,6 +44,20 @@ Vant follows [Semantic Versioning 2.0.0](https://semver.org/lang/zh-CN/).
 - Icon: incorrect image icon height when loading [#6858](https://github.com/youzan/vant/issues/6858)
 - ImagePreview: fit orientationchange [#6825](https://github.com/youzan/vant/issues/6825)
 
+### [v2.9.4](https://github.com/youzan/vant/compare/v2.9.3...v2.9.4)
+
+`2020-07-29`
+
+**Feature**
+
+- ShareSheet: add className option [#6886](https://github.com/youzan/vant/issues/6886)
+- Sku: modify default min year of sku date picker [#6879](https://github.com/youzan/vant/issues/6879)
+
+**Bug Fixes**
+
+- Popup: incorrect lock scroll in some cases [#6892](https://github.com/youzan/vant/issues/6892)
+- Stepper: double tap to scroll in safari [#6882](https://github.com/youzan/vant/issues/6882)
+
 ### [v2.9.3](https://github.com/youzan/vant/compare/v2.9.2...v2.9.3)
 
 `2020-07-19`

docs/markdown/changelog.zh-CN.md

@@ -44,6 +44,20 @@ Vant 遵循 [Semver](https://semver.org/lang/zh-CN/) 语义化版本规范。
 - Icon: 修复图片图标加载过程中高度异常的问题 [#6858](https://github.com/youzan/vant/issues/6858)
 - ImagePreview: 修复 iOS 下旋转屏幕时布局错误的问题 [#6825](https://github.com/youzan/vant/issues/6825)
 
+### [v2.9.4](https://github.com/youzan/vant/compare/v2.9.3...v2.9.4)
+
+`2020-07-29`
+
+**Feature**
+
+- ShareSheet: 新增 className 选项，用于自定义选项的类名 [#6886](https://github.com/youzan/vant/issues/6886)
+- Sku: 优化日期选择范围 [#6879](https://github.com/youzan/vant/issues/6879)
+
+**Bug Fixes**
+
+- Popup: 修复在个别情况下滚动锁定无法解除的问题 [#6892](https://github.com/youzan/vant/issues/6892)
+- Stepper: 修复在 safari 上快速点击按钮时会导致页面滚动的问题 [#6882](https://github.com/youzan/vant/issues/6882)
+
 ### [v2.9.3](https://github.com/youzan/vant/compare/v2.9.2...v2.9.3)
 
 `2020-07-19`