Past Dates can still be picked through time picker.

[TNChalise]

Steps to reproduce:

 var nowTemp = new Date();
 var now = new Date(nowTemp.getFullYear(), nowTemp.getMonth(), nowTemp.getDate(), 0, 0, 0, 0);

 $('.datetime-later').fdatepicker({
   onRender: function(date) {
     return date.valueOf() < now.valueOf() ? 'disabled' : '';
   },
   format: 'dd-mm-yyyy hh:ii',
   disableDblClickSelection: true,
   pickTime: true,
 });

• Select Future Date
• Select Time [Will be able to pick past times for today.]
• Click on arrows to navigate past dates
• And Confirm

We will be able to select past dates from date picker even if its disabled on render.

If there any way to address the problem with disabling past times as well ?