Calendar

Calendar displays the grid of days in a month and allow users to select a single date.

onClick
```
(date: Date) => void
```
Handler that is called when a date is clicked.
value
```
Date
```
The current date.
className
```
string
```
className for the element
maxDate
```
Date
```
The oldest date allowed by the Calendar
minDate
```
Date
```
The earliest date allowed by the Calendar