Datepicker 3.4.3 'change' commits changes to all datepickers

When trying to use the 'change' function, the new settings are applied to all datepickers on page.

For example, with the code below, one would expect that only the input 'myrange' would be a ranged datepicker, but in fact it causes all pickers to become range-aware. If this is by design it should be made clearer.

To test:

<input type="text" class="date" id="plainoledate"/>

<script type="text/javascript">

$(document).ready(function(){

$('.date').datepicker();

});

</script>

<input type="text" class="date" id="myrange"/>

<script type="text/javascript">

$(document).ready(function(){

$('#myrange').datepicker('change',{ rangeSelect: true});

});

</script>