[ Feature request ] Task priority

[lllopo]

The tasks are lacking one very common and important feature (or at least I couldn't find it) - task priority. This mean the ability to set importance of the task to (at least) : low, normal and high. I know this can be done to some extent with the pro version as a custom field, but it is not ok but two reasons : assigned users are not notified for changes in the custom fields (as far as I know)and more importantly - the task importance should be easily visible (and filterable) in the tasks list.