title: React datepicker set min and max date
body: <p>I am using react-datepicker in my project.<br>
  I need to display only days for a specific month (lets say February 2020). I was under the impression that I could pass iso dates as minDate and maxDate but this does not seem to work.</p>
  
  <p>My code: </p>
  
  <pre><code>   const DatePickerMod = () =&gt; {
      const [startDate, setStartDate] = useState(null);
    return (
      &lt;DatePicker
        selected={startDate}
        onChange={date =&gt; setStartDate(date)}
        minDate={'02-01-2020'}
        maxDate={'02-29-2020}
        placeholderText="Select a date in February 2020"
      /&gt;
    );
    };
  </code></pre>