#151 Change remindme syntax to allow “a year”/“one year” etc. 1 year, 11 months ago

Ticket created by ~towernumbernine on ~nova/fletcher

Right now remindme doesn’t seem to work if you write “a year” or “one year”, replying with “Couldn’t parse time syntax” - it seems like you have to give an actual number. It would be cool for these text-based descriptions to work, though obviously not high priority.