Feature request: Recurrent tasks

[Aleksander]

Quite important if you use Zim as task manager. The simplest solution is something like org-mode ( +1d, +2m, etc - http://orgmode.org/manual/Repeated-tasks.html) added to due-date (for example: [d:2016-03-05 +1w]) or as independent token (for example "rec:+1w", as in android app Simpletask or topydo cli task manager) in task description line. When you toggle checkbox, task is duplicated with recalculated, according to recurrence scheme, due date.