Changelog: update for 2.3.5 (#10804)

CHANGELOG.en-US.md

 ## Changelog
 
+### 2.3.5
+
+*2018-04-20*
+
+- Fixed incorrect highlights in DatePicker panel when `type` is week, #10712
+- Fixed InputNumber being empty when its initial value is 0, #10714
+- Added `automatic-dropdown` attribute for Select, #10042 (by @Seebiscuit)
+- Fixed disabled Rate's value still being updated by navigation keys, #10726 (by @Richard-Choooou)
+- Now DatePicker's `type` attribute can be `'dates'`, where you can pick multiple dates in one picker, #10650 (by @Mini256)
+- Added `prev-click` and `next-click` events for Pagination, #10755
+- Added `pager-count` attribute for Pagination, #10493 (by @chongjohn716)
+- Added `type` as the 3rd param of Tree's `allow-drop` attribute callback, #10792
+- Now we use ResizeObserver to detect DOM element resizing, #10779
+
 ### 2.3.4
 
 *2018-04-12*

CHANGELOG.es.md

 ## Changelog
 
+### 2.3.5
+
+*2018-04-20*
+
+- Fixed incorrect highlights in DatePicker panel when `type` is week, #10712
+- Fixed InputNumber being empty when its initial value is 0, #10714
+- Added `automatic-dropdown` attribute for Select, #10042 (by @Seebiscuit)
+- Fixed disabled Rate's value still being updated by navigation keys, #10726 (by @Richard-Choooou)
+- Now DatePicker's `type` attribute can be `'dates'`, where you can pick multiple dates in one picker, #10650 (by @Mini256)
+- Added `prev-click` and `next-click` events for Pagination, #10755
+- Added `pager-count` attribute for Pagination, #10493 (by @chongjohn716)
+- Added `type` as the 3rd param of Tree's `allow-drop` attribute callback, #10792
+- Now we use ResizeObserver to detect DOM element resizing, #10779
+
 ### 2.3.4
 
 *2018-04-12*

CHANGELOG.zh-CN.md

 ## 更新日志
 
+### 2.3.5
+
+*2018-04-20*
+
+- 修复 DatePicker 的 `type` 为 week 时面板错误高亮的问题，#10712
+- 修复 InputNumber 初始值为 0 时输入框为空的问题，#10714
+- 新增 Select 的 `automatic-dropdown` 属性，#10042（by @Seebiscuit）
+- 修复 `disabled` 的 Rate 仍能通过键盘左右键改变组件值的问题，#10726（by @Richard-Choooou）
+- 现在 DatePicker 的 `type` 属性可以接收 `'dates'`，用于选择多个日期，#10650（by @Mini256）
+- 新增 Pagination 的 `prev-click` 和 `next-click` 事件，#10755
+- 新增 Pagination 的 `pager-count` 属性，#10493（by @chongjohn716）
+- 新增 `type` 作为 Tree 的 `allow-drop` 属性回调的第三个参数，#10792
+- 改用 ResizeObserver 对元素的尺寸变化进行监测，#10779
+
 ### 2.3.4
 
 *2018-04-12*