Timepicker does not support Datepicker style relative date formats (with minDate and maxDate)

[bollard]

Original issue raised in this StackOverflow question

Datepicker and Timepicker both support minDate and maxDate properties. Datepicker however, allows you to specify relative date formats (such as +1y). See here.

Timepicker does not appear able to parse these date formats and throws an error:

Error parsing the date string: Missing number at position 0
date string = +1y
date format = yy-mm-dd 

Please add support for relative date formats, as implemented in Datepicker