* feat: add pointAtCenter prop for dropdown
* feat: dropdown support arrow pointing at center
* chore: code clean
* chore: use getPlacements in tooltip
* feat: dropdown support 'top' and 'bottom'
* chore: update snapshot
* chore: move placements to util folder
* feat: make 'topCenter' and 'bottomCenter' in Dropdown deprecated
* test: update snapshot
* test: add test for topCenter and bottomCenter
* feat: Menu.Item support icon
* docs: update menu item usage
* docs: remove span wrap,when use icon
* fix: Collapsed depends on the span
* ✅ fix demo snapshot
* do not wrap children when it is span
* Menu.SubMenu support icon prop
* fix sub menu title
* fix eslint
* update dropdown demo
* fix extra icon attribute on li
Co-authored-by: MengZhaoFly <1424254461@qq.com>
* feat: use @ant-design/icons@4.0
* feat: use createFromIconfontCN to make site works
* feat: update doc for Icon
* feat: use icon in component Alert
* feat: use icon in component Avatar
* feat: use icon in component Breadcrumb
* feat: use icon in component Button
* feat: use icon in component Cascader
* feat: use icon in component Collapse
* feat: use icon in component Datepicker
* feat: use icon in component Dropdown
* feat: use icon in component Form
* feat: use icon in component Input
* feat: use icon in component InputNumber
* feat: use icon in component Layout
* feat: use icon in component Mention
* feat: use icon in component Message
* feat: use icon in component Modal
* feat: use icon in component Notification
* feat: use icon in component PageHeader
* feat: use icon in component Pagination
* feat: use icon in component Popconfirm
* feat: use icon in component Progress
* feat: use icon in component Rate
* feat: use icon in component Result
* feat: use icon in component Select
* feat: use icon in component Step
* feat: use icon in component Switch
* feat: use icon in component Table
* feat: use icon in component Tab
* feat: use icon in component Tag
* feat: handle rest component which using Icon
* fix: remove unused vars
* feat: use latest alpha ant design icons
* fix: failed test in uploadlist.test.js
* test: update snapshot for icons
* doc: add Icon for site
* doc: use @ant-design/icons in site
* chore: use latest icons
* fix: tslint issue
* fix: test cases
* fix: types for react
* fix: lint rules for import orders
* fix: use @ant-design/icons@4.0.0-alpha.5 to avoid insert css in server render
* fix: eslint error in demo/**.md
* inject antd icons
* update snapshot
* fix site
* doc: update docs
* fix: code snippets icon in site
* feat: use latest @ant-design/icons
* fix: icon props in message