Date Range Picker

This is a component to select a date range with single calendar popup.

This project is based on DatePicker component for Vaadin Flow and also in EnhancedDatePicker.

On top of basic functionality of DatePicker, it has ability to select date ranges using only one scrollable calendar. As in EnhancedDatePicker, formatting is done by JavaScript library date-fns v2.0.0-beta.2. More information about supported formatting paterns can be found here: https://date-fns.org/v2.0.0-beta.2/docs/format