What if I need a dependency tree on my tasks? What if I need to share the list with others - does this attach data to a session cookie or something? What if I n

What if I need a dependency tree on my tasks? What if I need to share the list with others - does this attach data to a session cookie or something? What if I need to subtask an item. What if I need to time track the start to finish? What if I need to estimate that? What if I need a title and description for each task, and a way to associate blocking, duplicates, etc? A TODO list is one thing, but this isn't going to replace Mattermost or Jira tomorrow.