Good plugin Rated 5 out of 5 stars

I was looking for something like this plugin. Just a few remarks:
1> is it possible to integrate with the classical system of tasks in thunderbird ?
2> I think the task window would be better if it replaces the folders window (at the left): we will have a task oriented view instead of a folder oriented view
3> is there a repository with the sources ?
4> is it possible to add tag at each task (personal, work, etc...) , for instance using the tag system for messages ? More generally, a system compatible with tag and task systems in thundebird will be the killer app I was looking for...

This review is for a previous version of the add-on (0.33).