Merge remote-tracking branch 'origin/master' into 2.0
# Conflicts:
# antdv-demo
# components/auto-complete/__tests__/__snapshots__/demo.test.js.snap
# components/avatar/__tests__/__snapshots__/demo.test.js.snap
# components/button/__tests__/__snapshots__/demo.test.js.snap
# components/collapse/__tests__/__snapshots__/demo.test.js.snap
# components/date-picker/__tests__/__snapshots__/demo.test.js.snap
# components/form/__tests__/__snapshots__/demo.test.js.snap
# components/input/__tests__/__snapshots__/demo.test.js.snap
# components/locale-provider/__tests__/__snapshots__/index.test.js.snap
# components/select/__tests__/__snapshots__/demo.test.js.snap
# components/tag/__tests__/__snapshots__/demo.test.js.snap
# components/vc-dialog/Dialog.jsx