Adding days to std.datetime.Date

[Piotr Szturmaj]

Is it possible to add a particular number of days to a Date?
I have number of days since 1 Jan 2000 and I want to convert it to Date:

int days = read!int; // number of days since 1 Jan 2000
Date x = Date(2000, 1, 1);
x.add!"days"(days);

Unfortunately add() does not support adding days. Will it be possible in 
the future or is there another approach?

Thanks