Delete commented out method overrides.
Add ReactiveCocoa to the project and link it.
Use RAC instead of KVO in FilterViewController
Create the TaskCellViewModel class and a View Models group.
Use a text view for the primary text in a TaskCell.
Shift TaskCell to RAC and move most of its logic to view controllers.
Remove Color class and add methods to a UIColor category instead.
Convert to ARC.

Excludes third-party code.
Move SSTextView to the Libraries group.
Update copyright notices on TaskCell and TaskCellViewModel
Delete unused AttributedLabel an TaskViewCell classes.
Delete unused nibs