Set Due Date doesn't update the interval of card

[vaibhav]

@dae

packing into custom data would avoid this

I think that packing the last revlog id in the custom data would be the best way out.

Though, I won’t object if you think that creating a new column would be better considering the long-term.

Also see my comment here:

@vaibhav

If someone implements this, we will kill two birds with one stone. We will be able to calculate R accurately when sorting cards during review and we will be able to calculate the exact time elapsed since the last same-day review.