Fixed that annoying bug that was causing us to get empty timetables every time we opened the app.
Turns out it was setting the current week to week 0 under some very specific, but not unusual circumstances. You needed to exit the app in week 1 with week 2 being empty. This is fixed, it was a typo actually, but the fix won't be pushed out for a bit, because I want to do some more fixes and stuff first. In the mean time, here's what you can do if you're getting the error:
1. When you open the app, press "Add Week" in the week drop-down.
2. Switch to the newly created week.
3. Exit the app (pressing back should do it)
This will solve it unless you exit the app in week 1 with an empty week existing, in which case just do this again. Fix should be out soon. I start uni in a fortnight, so I want to get stuff done between now and then.