Docs: changelog for 2.6.0 (#14531)

CHANGELOG.en-US.md

 ## Changelog
 
+### 2.6.0
+
+**2019-03-01**
+
+#### New features
+- Timeline
+  - Add timeline component (by @jikkai in #14248)
+- DropdownItem
+  - Add icon prop to `el-dropdown-item` (by @gabrielboliveira in #14088)
+- Input
+  - Add show-password props (by @phshy0607 in #13966)
+- Select
+  - Add slot `empty` (by @elfman in #13785)
+- Autocomplete
+  - Add highlight-first-item prop (by @YamenSharaf in #14269)
+- I18n
+  - Created Armenian locale (by @hamletbarsamyan in #14214)
+- Docs
+  - French translation (by @smalesys in #12153, #14418, #14434)
+
+#### Optimization
+- Alert
+  - Update alert description default slot class (by @iamkun in #14488)
+- Input
+  - Update input password (by @iamkun in #14480)
+- InputNumber
+  - Remove unnecessary parseFloat (by @JuniorTour in #14172)
+- Menu
+  - Add support for `el-menu-item` without index (by @georgyfarniev in #13298)
+- Table
+  - Remove some html DOM operations (by @elfman in #13643)
+- Upload
+  - Optimize code (by @elfman in #13973)
+- Popup
+  - Optimize code (by @KAionro in #14413)
+- Docs
+  - Add more detail about how to run play mode for contribution (by @island205 in #14355)
+  - Warn input as a controlled component. (by @wacky6 in #14463)
+  - Update Table doc (by @luguokong in #14329)
+  - Update input doc (by @iamkun in #14437)
+  - Update custom-theme docs (by @wangguohao in #14297)
+  - Make the icon style change when hover on it (by @tuxinghuan in #14295)
+- Build
+  - Minimizing css and js for Element doc site (by @iamkun in #14430)
+  - Speeding up webpack (by @hetech in #14484)
+  - Use cli to select release version (by @hetech in #14354)
+- Install stale for issue handling (by @island205 in #14392)
+
+#### Bug fixes
+- Menu
+  - Fix subMenu focus bug when switch browser tab (by @liupl in #13976)
+- MessageBox
+  - Fix type definition (by @NateScarlet in #14278)
+- ScrollBar
+  - Prevent right button click on thumb (by @xifeiwu in #14196)
+- Switch
+  - Trigger form validation if value changes (by @hetech in #14426)
+- Table
+  - Make toggleAllSelection method an instance method (by @letanure in #14075)
+- Tabs & Dropdown
+  - Fix style (by @hetech in #14452)
+- Tree
+  - Empty-text tips are different from tables (by @ColinCll in #14331)
+- Docs
+  - Fix  DatetimePicker format doc error (by @iamkun in #14290)
+  - Spelling issue in datepicker documentation (by @helmut in #14481)
+  - Fix pagination doc style (by @liuchuzhang in #14451)
+
 ### 2.5.4
 
 *2019-02-01*
@@ -72,58 +140,58 @@
 
 #### Bug fixes
 - Autocomplete
-  - Fix dropdown's last line beging clipped (#13597) (by @ziyoung)
-  - Fix missing popper arrow (#13762) (by @liuchuzhang)
+  - Fix dropdown's last line beging clipped (by @ziyoung in #13597)
+  - Fix missing popper arrow (by @liuchuzhang in #13762)
 - Carousel
-  - Cleanup timer when component is destroyed (#13820) (by @elfman)
+  - Cleanup timer when component is destroyed (by @elfman in #13820)
 - Cascader
-  - Remove deprecated property of computed props (#13737) (by @iamkun)
-  - Fix CascaderOption's type definition in TypeScript (#13613) (by @NateScarlet)
-  - Fix icon covering the text (#13596) (by @ziyoung)
+  - Remove deprecated property of computed props (by @iamkun in #13737)
+  - Fix CascaderOption's type definition in TypeScript (by @NateScarlet in #13613)
+  - Fix icon covering the text (by @ziyoung in #13596)
 - Checkbox
   - Refine style (by @PanJiaChen)
 - DatePicker
-  - Add missing v-for `key` in TimeSpinner (#13547) (by @Ende93)
-  - Fix week highlight on year boundary (#13883) (by @suyi91)
+  - Add missing v-for `key` in TimeSpinner (by @Ende93 in #13547)
+  - Fix week highlight on year boundary (by @suyi91 in #13883)
 - Input
-  - Fix textarea DOM node reference (#13803) (by @laomu1988 @island205)
+  - Fix textarea DOM node reference (by @laomu1988 @island205 in #13803)
 - Pagination
-  - Input value won't be less than 1 (#13727) (by @elfman)
+  - Input value won't be less than 1 (by @elfman in #13727)
 - Popover
-  - Fix popover issues with hover trigger (#13104) (by @goldengecko)
-  - Fix popper instance memory leak (#13988) (by @qpxtWhite)
+  - Fix popover issues with hover trigger (by @goldengecko in #13104)
+  - Fix popper instance memory leak (by @qpxtWhite in #13988)
 - Radio
   - Refine style (by @ohhoney1)
 - Table
-  - Enhanced table sorting when clicking on the sorting arrow (#12890) (by @ohhoney1)
-  - Fix empty text vertical alignment issue on IE10+ (#13638) (by @imzjy)
-  - Fix index type documentation (#13628) (by @ilovefafa)
-  - Fix `show-summary` display issue when multilevel header has fixed attr (#13914) (by @luckyCao)
+  - Enhanced table sorting when clicking on the sorting arrow (by @ohhoney1 in #12890)
+  - Fix empty text vertical alignment issue on IE10+ (by @imzjy in #13638)
+  - Fix index type documentation (by @ilovefafa in #13628)
+  - Fix `show-summary` display issue when multilevel header has fixed attr (by @luckyCao in #13914)
 - Tabs
-  - Fix auto scroll bug (#13696) (by @iamkun)
-  - Get the correct tab through tab name (#13705) (by @iamkun)
-  - Use paneName instead of name to determine pane style (#13733) (by @iamkun)
+  - Fix auto scroll bug (by @iamkun in #13696)
+  - Get the correct tab through tab name (by @iamkun in #13705)
+  - Use paneName instead of name to determine pane style (by @iamkun in #13733)
 - Tree
   - Fix `showCheckbox` prop on `Tree` can not affect their children `tree-node` (by @KidneyFlower)
-  - Update doc and definition file (#13540) (by @ziyoung)
+  - Update doc and definition file (by @ziyoung in #13540)
 - Upload
-  - Add `url` prop to upload file when `list-type` changed (#13771) (by @elfman)
+  - Add `url` prop to upload file when `list-type` changed (by @elfman in #13771)
 - Slider
-  - Fix source code indentation (#13955) (by @wacky6)
+  - Fix source code indentation (by @wacky6 in #13955)
 - I18n
   - Add missing Catalan translations (by @jaumesala)
-  - Add missing ru translation (#13658) (by @justlp)
-  - Fix Finnish translations (#14137) (by @jenkrisu)
+  - Add missing ru translation (by @justlp in #13658)
+  - Fix Finnish translations (by @jenkrisu in #14137)
 - Doc
-  - Update Spanish doc 2.4.11 (#13522) (by @Gonzalo2310)
+  - Update Spanish doc 2.4.11 (by @Gonzalo2310 in #13522)
 - Others
   - Remove unnecessary script (by @ziyoung)
-  - Fix error anchor link (#13753) (by @iamkun)
+  - Fix error anchor link (by @iamkun in #13753)
   - Fix inconsistent capitalization in documentation (by @wonderjar)
-  - Add DingDing chat group qr code to readme (#13957) (by @iamkun)
-  - Add yarn logs to .gitignore (#13922) (by @mimimi)
-  - Remove sponsor duotai (#14156) (by @island205)
-  - Update readme qr code src (#13960) (by @iamkun)
+  - Add DingDing chat group qr code to readme (by @iamkun in #13957)
+  - Add yarn logs to .gitignore (by @mimimi in #13922)
+  - Remove sponsor duotai (by @island205 in #14156)
+  - Update readme qr code src (by @iamkun in #13960)
   - Update CDN link, fix typo (by @ziyoung)
 
 ### 2.4.11

CHANGELOG.es.md

 ## Changelog
 
+### 2.6.0
+
+**2019-03-01**
+
+#### New features
+- Timeline
+  - Add timeline component (by @jikkai in #14248)
+- DropdownItem
+  - Add icon prop to `el-dropdown-item` (by @gabrielboliveira in #14088)
+- Input
+  - Add show-password props (by @phshy0607 in #13966)
+- Select
+  - Add slot `empty` (by @elfman in #13785)
+- Autocomplete
+  - Add highlight-first-item prop (by @YamenSharaf in #14269)
+- I18n
+  - Created Armenian locale (by @hamletbarsamyan in #14214)
+- Docs
+  - French translation (by @smalesys in #12153, #14418, #14434)
+
+#### Optimization
+- Alert
+  - Update alert description default slot class (by @iamkun in #14488)
+- Input
+  - Update input password (by @iamkun in #14480)
+- InputNumber
+  - Remove unnecessary parseFloat (by @JuniorTour in #14172)
+- Menu
+  - Add support for `el-menu-item` without index (by @georgyfarniev in #13298)
+- Table
+  - Remove some html DOM operations (by @elfman in #13643)
+- Upload
+  - Optimize code (by @elfman in #13973)
+- Popup
+  - Optimize code (by @KAionro in #14413)
+- Docs
+  - Add more detail about how to run play mode for contribution (by @island205 in #14355)
+  - Warn input as a controlled component. (by @wacky6 in #14463)
+  - Update Table doc (by @luguokong in #14329)
+  - Update input doc (by @iamkun in #14437)
+  - Update custom-theme docs (by @wangguohao in #14297)
+  - Make the icon style change when hover on it (by @tuxinghuan in #14295)
+- Build
+  - Minimizing css and js for Element doc site (by @iamkun in #14430)
+  - Speeding up webpack (by @hetech in #14484)
+  - Use cli to select release version (by @hetech in #14354)
+- Install stale for issue handling (by @island205 in #14392)
+
+#### Bug fixes
+- Menu
+  - Fix subMenu focus bug when switch browser tab (by @liupl in #13976)
+- MessageBox
+  - Fix type definition (by @NateScarlet in #14278)
+- ScrollBar
+  - Prevent right button click on thumb (by @xifeiwu in #14196)
+- Switch
+  - Trigger form validation if value changes (by @hetech in #14426)
+- Table
+  - Make toggleAllSelection method an instance method (by @letanure in #14075)
+- Tabs & Dropdown
+  - Fix style (by @hetech in #14452)
+- Tree
+  - Empty-text tips are different from tables (by @ColinCll in #14331)
+- Docs
+  - Fix  DatetimePicker format doc error (by @iamkun in #14290)
+  - Spelling issue in datepicker documentation (by @helmut in #14481)
+  - Fix pagination doc style (by @liuchuzhang in #14451)
+
 ### 2.5.4
 
 *2019-02-01*
@@ -107,7 +175,7 @@
   - Eliminar  scripts innecesarios (por @ziyoung)
   - Corregido el error de anchor link (#13753) (por @iamkun)
   - Corrección de la capitalización inconsistente en la documentación (por @wonderjar)
-  - Añadido código qr del grupo de chat DingDing al readme (#13957) (by @iamkun)
+  - Añadido código qr del grupo de chat DingDing al readme (by @iamkun in #13957)
   - Añadido logs de hilo a .gitignore (#13922) (por @mimimi)
   - Eliminada la cuota de patrocinadores (#14156) (por @island205)
   - Actualizado readme qr code src (#13960) (por @iamkun)

CHANGELOG.fr-FR.md

 ## Changelog
 
+### 2.6.0
+
+**2019-03-01**
+
+#### New features
+- Timeline
+  - Add timeline component (by @jikkai in #14248)
+- DropdownItem
+  - Add icon prop to `el-dropdown-item` (by @gabrielboliveira in #14088)
+- Input
+  - Add show-password props (by @phshy0607 in #13966)
+- Select
+  - Add slot `empty` (by @elfman in #13785)
+- Autocomplete
+  - Add highlight-first-item prop (by @YamenSharaf in #14269)
+- I18n
+  - Created Armenian locale (by @hamletbarsamyan in #14214)
+- Docs
+  - French translation (by @smalesys in #12153, #14418, #14434)
+
+#### Optimization
+- Alert
+  - Update alert description default slot class (by @iamkun in #14488)
+- Input
+  - Update input password (by @iamkun in #14480)
+- InputNumber
+  - Remove unnecessary parseFloat (by @JuniorTour in #14172)
+- Menu
+  - Add support for `el-menu-item` without index (by @georgyfarniev in #13298)
+- Table
+  - Remove some html DOM operations (by @elfman in #13643)
+- Upload
+  - Optimize code (by @elfman in #13973)
+- Popup
+  - Optimize code (by @KAionro in #14413)
+- Docs
+  - Add more detail about how to run play mode for contribution (by @island205 in #14355)
+  - Warn input as a controlled component. (by @wacky6 in #14463)
+  - Update Table doc (by @luguokong in #14329)
+  - Update input doc (by @iamkun in #14437)
+  - Update custom-theme docs (by @wangguohao in #14297)
+  - Make the icon style change when hover on it (by @tuxinghuan in #14295)
+- Build
+  - Minimizing css and js for Element doc site (by @iamkun in #14430)
+  - Speeding up webpack (by @hetech in #14484)
+  - Use cli to select release version (by @hetech in #14354)
+- Install stale for issue handling (by @island205 in #14392)
+
+#### Bug fixes
+- Menu
+  - Fix subMenu focus bug when switch browser tab (by @liupl in #13976)
+- MessageBox
+  - Fix type definition (by @NateScarlet in #14278)
+- ScrollBar
+  - Prevent right button click on thumb (by @xifeiwu in #14196)
+- Switch
+  - Trigger form validation if value changes (by @hetech in #14426)
+- Table
+  - Make toggleAllSelection method an instance method (by @letanure in #14075)
+- Tabs & Dropdown
+  - Fix style (by @hetech in #14452)
+- Tree
+  - Empty-text tips are different from tables (by @ColinCll in #14331)
+- Docs
+  - Fix  DatetimePicker format doc error (by @iamkun in #14290)
+  - Spelling issue in datepicker documentation (by @helmut in #14481)
+  - Fix pagination doc style (by @liuchuzhang in #14451)
+
 ### 2.5.4
 
 *2019-02-01*

CHANGELOG.zh-CN.md

 ## 更新日志
 
+### 2.6.0
+
+**2019-03-01**
+
+#### 新特性
+- Timeline
+  - 添加 Timeline 组件 (by @jikkai in #14248)
+- DropdownItem
+  - `el-dropdown-item` 支持添加 icon (by @gabrielboliveira in #14088)
+- Input
+  - 添加 `show-password` 属性，支持配置显示密码按钮 (by @phshy0607 in #13966)
+- Select
+  - 添加 slot `empty` (by @elfman in #13785)
+- Autocomplete
+  - 添加 `highlight-first-item` 属性，控制是否默认突出显示远程搜索建议中的第一项 (by @YamenSharaf in #14269)
+- I18n
+  - 添加亚美尼亚语支持 (by @hamletbarsamyan in #14214)
+- Docs
+  - 新增法语文档 (by @smalesys in #12153, #14418, #14434)
+
+#### 优化
+- Alert
+  - 组件对通过 slot 传入的  description 也应用默认样式类 (by @iamkun in #14488)
+- InputNumber
+  -移除多余的 `parseFloat` (by @JuniorTour in #14172)
+- Menu
+  - 支持 `el-menu-item` 不添加 index (by @georgyfarniev in #13298)
+- Table
+  - 移除无用的 DOM 操作 (by @elfman in #13643)
+- Upload
+  - 代码优化 (by @elfman in #13973)
+- Popup
+  - 移除无用代码 (by @KAionro in #14413)
+- Docs
+  - 添加更多文档说明如何贡献代码 (by @island205 in #14355)
+  - 添加 `el-input` 是受控组件的警示 (by @wacky6 in #14463)
+  - 优化 Table 的文档 (by @luguokong in #14329)
+  - 更新 Input 文档 (by @iamkun in #14437)
+  - 优化自定义主题文档 (by @wangguohao in #14297)
+  - 为 Icon 文档添加 hover 效果 (by @tuxinghuan in #14295)
+- Build
+  - 压缩 Element 文档站的 JS 和 CSS 文件 (by @iamkun in #14430)
+  - 优化 Webpack 打包速度，从6分钟优化到1分多 (by @hetech in #14484)
+  - 添加 CLI 工具，选择版本号 (by @hetech in #14354)
+- 使用 Stale 来管理过时（暂定1年）的 Issue 和 PR (by @island205 in #14392)
+
+#### 问题修复
+- Menu
+  - 修复浏览器标签切换引起的 focus 问题 (by @liupl in #13976)
+- MessageBox
+  - 修复 TS 定义 (by @NateScarlet in #14278)
+- ScrollBar
+  - 修复点击鼠标右键导致拖动的问题 (by @xifeiwu in #14196)
+- Switch
+  - 添加 `validate-event` 属性，设置改变 Switch 状态时是否触发表单的校验 (by @hetech in #14426)
+- Table
+  - 修复多 Table 实例共享 `toggleAllSelection` 方法，造成无法切换问题 (by @letanure in #14075)
+- Tabs & Dropdown
+  - 修复样式问题 (by @hetech in #14452)
+- Tree
+  - 与 Table 统一占位文样式 (by @ColinCll in #14331)
+- Docs
+  - 修复 DatetimePicker 文档问题 (by @iamkun in #14290)
+  - 修复 DatePicker 文档拼写问题 (by @helmut in #14481)
+  - 修复分页组件文档样式问题 (by @liuchuzhang in #14451)
+
 ### 2.5.4
 
 *2019-02-01*
@@ -74,58 +140,58 @@
 
 #### 修复
 - Autocomplete
-  - 修正下拉框最后一行显示不完整的问题 (#13597) (by @ziyoung)
-  - 修正下拉框箭头 (#13762) (by @liuchuzhang)
+  - 修正下拉框最后一行显示不完整的问题 (by @ziyoung in #13597)
+  - 修正下拉框箭头 (by @liuchuzhang in #13762)
 - Carousel
-  - 组件销毁时释放内部 Timer (#13820) (by @elfman)
+  - 组件销毁时释放内部 Timer (by @elfman in #13820)
 - Cascader
-  - 移除已废弃的计算属性的 cache 属性 (#13737) (by @iamkun)
-  - 修正 TypeScript 中 CascaderOption 类型定义 (#13613) (by @NateScarlet)
-  - 修正图标覆盖文字的问题 (#13596) (by @ziyoung)
+  - 移除已废弃的计算属性的 cache 属性 (by @iamkun in #13737)
+  - 修正 TypeScript 中 CascaderOption 类型定义 (by @NateScarlet in #13613)
+  - 修正图标覆盖文字的问题 (by @ziyoung in #13596)
 - Checkbox
   - 改进显示样式 (by @PanJiaChen)
 - DatePicker
-  - 修正 TimeSpinner 中缺失的 v-for `key` 属性 (#13547) (by @Ende93)
-  - 修正周选择器在跨年时的高亮行为 (#13883) (by @suyi91)
+  - 修正 TimeSpinner 中缺失的 v-for `key` 属性 (by @Ende93 in #13547)
+  - 修正周选择器在跨年时的高亮行为 (by @suyi91 in #13883)
 - Input
-  - 修复 textarea 时的 DOM 节点引用 (#13803) (by @laomu1988 @island205)
+  - 修复 textarea 时的 DOM 节点引用 (by @laomu1988 @island205 in #13803)
 - Pagination
-  - 输入框的值不会小于 1 (#13727) (by @elfman)
+  - 输入框的值不会小于 1 (by @elfman in #13727)
 - Popover
-  - 修正 hover 的触发行为 (#13104) (by @goldengecko)
-  - 修正弹出框的内存泄漏 (#13988) (by @qpxtWhite)
+  - 修正 hover 的触发行为 (by @goldengecko in #13104)
+  - 修正弹出框的内存泄漏 (by @qpxtWhite in #13988)
 - Radio
   - 改进显示样式 (by @ohhoney1)
 - Table
-  - 改进点击排序箭头时的行为 (#12890) (by @ohhoney1)
-  - 修正 IE10+ 中 “暂无数据” 提示的垂直布局 (#13638) (by @imzjy)
-  - 修正文档中 `index` 的类型说明 (#13628) (by @ilovefafa)
-  - 修正多级表头使用 `fixed` 属性时，表尾合计行的显示样式 (#13914) (by @luckyCao)
+  - 改进点击排序箭头时的行为 (by @ohhoney1 in #12890)
+  - 修正 IE10+ 中 “暂无数据” 提示的垂直布局 (by @imzjy in #13638)
+  - 修正文档中 `index` 的类型说明 (by @ilovefafa in #13628)
+  - 修正多级表头使用 `fixed` 属性时，表尾合计行的显示样式 (by @luckyCao in #13914)
 - Tabs
-  - 修正自动滚动 (#13696) (by @iamkun)
-  - 通过面板名称查找面板 (#13705) (by @iamkun)
-  - 使用 `paneName` 计算面板样式 (#13733) (by @iamkun)
+  - 修正自动滚动 (by @iamkun in #13696)
+  - 通过面板名称查找面板 (by @iamkun in #13705)
+  - 使用 `paneName` 计算面板样式 (by @iamkun in #13733)
 - Tree
   - 修正 `showCheckbox` 不能影响子节点的问题 (by @KidneyFlower)
-  - 更新文档和 TypeScript 定义 (#13540) (by @ziyoung)
+  - 更新文档和 TypeScript 定义 (by @ziyoung in #13540)
 - Upload
-  - `list-type` 改变时，保留 `url` 属性 (#13771) (by @elfman)
+  - `list-type` 改变时，保留 `url` 属性 (by @elfman in #13771)
 - Slider
-  - 修正源代码缩进 (#13955) (by @wacky6)
+  - 修正源代码缩进 (by @wacky6 in #13955)
 - I18n
   - 补充加泰罗尼亚语 (Catalan) 翻译 (by @jaumesala)
-  - 补充俄语 (Russian) 翻译 (#13658) (by @justlp)
-  - 补充芬兰语 (Finnish) 翻译 (#14137) (by @jenkrisu)
+  - 补充俄语 (Russian) 翻译 (by @justlp in #13658)
+  - 补充芬兰语 (Finnish) 翻译 (by @jenkrisu in #14137)
 - Doc
-  - 更新西班牙语文档至 2.4.11 (#13522) (by @Gonzalo2310)
+  - 更新西班牙语文档至 2.4.11 (by @Gonzalo2310 in #13522)
 - 其它
   - 移除多余的构建脚本 (by @ziyoung)
-  - 修正文档超链接 (#13753) (by @iamkun)
+  - 修正文档超链接 (by @iamkun in #13753)
   - 修正文档中不一致的大小写 (by @wonderjar)
-  - 增加钉钉群的二维码 (#13957) (by @iamkun)
-  - .gitignore 增加 yarn 日志文件 (#13922) (by @mimimi)
-  - 移除赞助商 多态 (#14156) (by @island205)
-  - Update readme qr code src (#13960) (by @iamkun)
+  - 增加钉钉群的二维码 (by @iamkun in #13957)
+  - .gitignore 增加 yarn 日志文件 (by @mimimi in #13922)
+  - 移除赞助商 多态 (by @island205 in #14156)
+  - Update readme qr code src (by @iamkun in #13960)
   - 更新 CDN 链接，修正错别字 (by @ziyoung)
 
 ### 2.4.11