* Add uk-UA localization
Ukrainian localization for the following components:
- locale-provider
- DatePicker
- TimePicker
- Calendar
* Add uk_UA locale to test suite
* Add uk_UA locale to tests snapshot
Tests on CI are failing because there are no snapshot for uk_UA locale.
Generate a snapshot with `npm test -u` command and add it to the test
suite.
* deps: upgrade TimePicker
* deps: upgrade DatePicker
* deps: upgrade Calendar
* fix: moment should work with LocaleProvider
* feat: update API of TimePicker
* feat: update Calendar's APIs
* feat: update DatePicker's APIs
* doc: update demo
* revert: add dateString and timeString and so on
* feat: add Calendar[defaultValue]
* feat: add defaultPickerValue
* docs: update docs about date picker
* feat: set moment locale to zh-cn automatically