Add support for Date&Time Variable Type (i.e. in Date&Time Widget)

Hi,

the Date&Time Widget creates a string which, when trying to use it with Date and Time nodes, requires type conversion from String to Date&Time type.

Using Date&Time type as variable types would also allow to auto recognize the schema w/o laborous and failure prone syntax checks and conversions.

Hence, I’d like to suggest to add the ability to use Date&Time type variables. It would make altering Dates and Times much easier like shifting days or changing formats from dd/mm/YYYY to mm/dd/YYYY.

Best
Mike