Changelog: update for 2.3.4 (#10691)

CHANGELOG.en-US.md

 ## Changelog
 
+### 2.3.4
+
+*2018-04-12*
+
+- Deleted duplicate `showTimeout` attribute in SubMenu's TypeScript declaration, #10566 (by @kimond)
+- Now you can customize Transfer's data item using scoped slot, #10577
+- Fixed clicking disabled prev and next button of Pagination still triggers `current-change` event, #10628
+- Fixed Textarea displaying `undefined` in SSR when its value is not set, #10630
+- Fixed disabled TabItem style when `type` is border-car, #10640
+- Added `$index` as `formatter`'s fourth param of Table, #10645
+- Fixed CheckboxButton not exported in TypeScript declaration, #10666
+
 ### 2.3.3
 
 *2018-04-04*

CHANGELOG.es.md

 ## Changelog
 
+### 2.3.4
+
+*2018-04-12*
+
+- Deleted duplicate `showTimeout` attribute in SubMenu's TypeScript declaration, #10566 (by @kimond)
+- Now you can customize Transfer's data item using scoped slot, #10577
+- Fixed clicking disabled prev and next button of Pagination still triggers `current-change` event, #10628
+- Fixed Textarea displaying `undefined` in SSR when its value is not set, #10630
+- Fixed disabled TabItem style when `type` is border-car, #10640
+- Added `$index` as `formatter`'s fourth param of Table, #10645
+- Fixed CheckboxButton not exported in TypeScript declaration, #10666
+
 ### 2.3.3
 
 *2018-04-04*

CHANGELOG.zh-CN.md

 ## 更新日志
 
+### 2.3.4
+
+*2018-04-12*
+
+- 删除 SubMenu 在 TypeScript 类型声明中重复的 `showTimeout` 属性，#10566（by @kimond）
+- 现在 Transfer 数据项的渲染支持通过 scoped slot 自定义，#10577
+- 修复点击 Pagination 禁用的上一页、下一页按钮仍会触发 `current-change` 事件的问题，#10628
+- 修复未绑定值的 Textarea 在 SSR 中会显示 `undefined` 的问题，#10630
+- 修复 `type` 为 border-car 的 Tabs 中被禁用标签项的样式，#10640
+- 新增 `$index` 作为 Table 的 `formatter` 属性回调的第四个参数，#10645
+- 修复 TypeScript 类型声明未导出 CheckboxButton 的问题，#10666
+
 ### 2.3.3
 
 *2018-04-04*

examples/docs/en-US/i18n.md

@@ -213,6 +213,7 @@ Currently Element ships with the following languages:
   <li>Hungarian (hu)</li>
   <li>Romanian (ro)</li>
   <li>Kurdish (ku)</li>
+  <li>Uighur (ug-CN)</li>
 </ul>
 
 If your target language is not included, you are more than welcome to contribute: just add another language config [here](https://github.com/ElemeFE/element/tree/dev/src/locale/lang) and create a pull request.

examples/docs/es/i18n.md

@@ -213,6 +213,7 @@ Actualmente Element está disponible en los siguientes idiomas:
   <li>Hungarian (hu)</li>
   <li>Romanian (ro)</li>
   <li>Kurdish (ku)</li>
+  <li>Uighur (ug-CN)</li>
 </ul>
 
 Si su idioma de destino no está incluido, puede contribuir: simplemente añada  [aqui](https://github.com/ElemeFE/element/tree/dev/src/locale/lang) otra configuración de idioma y cree un pull request.
\ No newline at end of file

examples/docs/zh-CN/i18n.md

@@ -225,6 +225,7 @@ ElementLocale.i18n((key, value) => i18n.t(key, value))
   <li>匈牙利语（hu）</li>
   <li>罗马尼亚语（ro）</li>
   <li>库尔德语（ku）</li>
+  <li>维吾尔语（ug-CN）</li>
 </ul>
 
 如果你需要使用其他的语言，欢迎贡献 PR：只需在 [这里](https://github.com/ElemeFE/element/tree/dev/src/locale/lang) 添加一个语言配置文件即可。