New features

• Popconfirm
  • Add popconfirm component (#17548 by @iamkun)

Bug fixes

• BackTop
  • Use cubic bezier scrolling (by @lon)
• DatePicker
  • Fix bug of only select min date of date range problem (#17191 by @smk0621)
• Select
  • Fix select test cases by (@msidolphin)
• Tree
  • Add font-size for the style of tree empty-text (#17094 by @spengjie)
• Table
  • Column header can be costumed (#17291 by @ziyoung)
  • Update table header cell style (#17284 by @ziyoung)
  • Fix table header height after filter (#17348 by @ziyoung)
  • Fixed row-style with display not work (#17002 by @a631807682)
  • Fix header table not display (#17341 by @ziyoung)
• Calendar
  • Import el-button and el-button-group (#17376 by @masongzhi)
• MessageBox
  • Fix icon position error (#17410 by @nullptru)
• TimePicker
  • Set the selection range after scrolling up or down (#16868 by @mattheyan)
• Message
  • Fix close instace offsetHeight（#17564） (#17852 by @gzwgq222)
• Form
  • Callback of validateField should be optional (#17314 by @CarterLi)
• Cascader
  • Fix TypeScript 3.7 compatibility (#17881 by @CarterLi)
• Menu
  • Fix router NavigationDuplicated error when using vue-router@^3.1.0 (#17269 by @iamkun)
• Dropdown
  • Update type file (#17550 by @iamkun)
• Progress
  • Add strokeLinecap prop (#17552 by @iamkun)
• InfiniteScroll
  • Skip trigger event on invisible element (#17553 by @iamkun)
• Image
  • Perfect picture preview behavior (#16985 by @luckyCao)
  • Fix shield the page when preview big image (#16796 by @luckyCao)
• Drawer
  • Bugfix drawer-append-to-body-not-working (#16953 by @JeremyWuuuuu)
• Select
  • Fix tag show value or empty issue (17199 by @luckyCao)
• Scrollbar
  • Fix FireFox scroll bar width (#18091 by @iamkun)

Optimization

• I18n
  • Update sv-SE.js (#17926 by @FOLLGAD)
  • Update avatar component fr doc (#17762 by @blombard)
• Docs
  • Fix time-select typo (#17250 by @wacky6)
  • Fix Drawer attribute accepted value typo in es (#17122 by @haoranyu)
  • Update Spanish changelog 2.12.0 (#17364 by @Gonzalo2310)
  • Fix Changelog typo (#17874 by @renlixin)
  • Fix Loading demo (#17862 by @MBearo)
  • Add input event in input Events Table (#18061 by @zhouxinyong)
  • Delete Input repeat change event (#18085 by @zhouxinyong)

新特性

• Popconfirm
  • 新增 Popconfirm 组件 (#17548 by @iamkun)

Bug fixes

• BackTop
  • 平滑过渡动画 (by @lon)
• DatePicker
  • 修复选择最小日期的 bug (#17191 by @smk0621)
• Select
  • 修复测试用例 (by @msidolphin)
• Tree
  • 增加 font-size 样式 (#17094 by @spengjie)
• Table
  • 头部可自定义 (#17291 by @ziyoung)
  • 更新头部样式 (#17284 by @ziyoung)
  • 修复时候 filter 之后高度问题 (#17348 by @ziyoung)
  • 修复 row-style 失效的 bug (#17002 by @a631807682)
  • 修复头部消失的 bug (#17341 by @ziyoung)
• Calendar
  • 导入 el-button 和 el-button-group (#17376 by @masongzhi)
• MessageBox
  • 修复图表位置 (#17410 by @nullptru)
• TimePicker
  • 滚动后设置正确的位置 (#16868 by @mattheyan)
• Message
  • 修复关闭的 offsetHeight（#17564） (#17852 by @gzwgq222)
• Form
  • ValidateField 的回调应为可选项 (#17314 by @CarterLi)
• Cascader
  • 修复 TypeScript 3.7 的兼容问题 (#17881 by @CarterLi)
• Menu
  • 修复 NavigationDuplicated 在 vue-router@^3.1.0 的报错 (#17269 by @iamkun)
• Dropdown
  • 更新类型文件 (#17550 by @iamkun)
• Progress
  • 增加 strokeLinecap 属性 (#17552 by @iamkun)
• InfiniteScroll
  • 跳过不可见元素触发 (#17553 by @iamkun)
• Image
  • 优化用户体验 (#16985 by @luckyCao)
  • 优化大图片展示问题 (#16796 by @luckyCao)
• Drawer
  • 修复 drawer-append-to-body 失效的 bug (#16953 by @JeremyWuuuuu)
• Select
  • 修复空 tag 的 bug (17199 by @luckyCao)
• Scrollbar
  • 修复 FireFox 双滚动条的 bug (#18091 by @iamkun)

Optimization

• I18n
  • 更新 sv-SE.js (#17926 by @FOLLGAD)
  • 更新 avatar 组件法语文档 (#17762 by @blombard)
• Docs
  • 修复 time-select 文档错误 (#17250 by @wacky6)
  • 修复 Drawer 文档错误 (#17122 by @haoranyu)
  • 更新 Spanish changelog 2.12.0 (#17364 by @Gonzalo2310)
  • 修复 Changelog 文档错误 (#17874 by @renlixin)
  • 修复 Loading 示例 (#17862 by @MBearo)
  • 增加 input event 相关文档 (#18061 by @zhouxinyong)
  • 移除 Input repeat change event 相关文档 (#18085 by @zhouxinyong)