Fix:

1. Event item style won't update immediately when state updated.
2. Sorting Chip won't update when the order changed.
3. Can't see the event of the bottom if too many events on the list.
4. Event in normal mode could not display priority.

Improve:

1. Due Date is considered when sorting by priority.
2. Event in normal mode has a description.

Feature:

1. Now you can see the time of past events.