Delay recurrent notes

[smurfix]

I'd like the ability for recurrent notes to restart N days after I acknowledge them.

Suppose I have a reminder to water my plants every three days. If I forgot to do it yesterday, fine I'll do it today grumble, but then I'd like the next due date to be three days from now, not two.

[maltaisn]

This is quite a big change to make as recurrence can be quite complex. What happens if a notification is recurring on monday and tuesday, and you miss monday? Does it get pushed to tuesday and wednesday forever? What if there was something important to do on monday?

I don't think I'll implement this anyway sorry, see the message at the top of the readme.