Make simple property getters/setters available in TaskData

[martiege]

Hello!

I'm continuing to work on my small app, and as I've always found the "urgency" number pretty useful, I figured I'd also show this off in the app, so I've started to rewrite that part of the code.

The issue I came across, is that when I want to implement the urgency function for the scheduled property, I have to parse this value myself, instead of e.g. using the get_due method.

For now, I've essentially recreated the get_timestamp function from task.rs, which doesn't feel very satisfying.

I'm guessing that it isn't logical to have methods for all possible properties, but perhaps it could make sense to put some of the utility functions either in the TaskData structure, or in some separate utility module, so that the timestamp-functionality can be reused for the other relevant properties when necessary?

[djmitche]

That makes a lot of sense. Some of them could probably just be made pub? I'd be happy to look at a PR for this.

[djmitche]

I've updated the issue subject. As I understand it, the idea here is to make the "simple" getters and setters like get_status or set_wait available on TaskData.

I suspect we could avoid some duplication by impl Deref<TaskData> for Task, so that TaskData methods can be called on a Task. Then, we can simply move those method implementations to the TaskData type.