Todoist sync issues

Hi! Thank you for adding the Todoist sync, it is a bit buggy though:

1. You can't “unsync" lists once they're set up. When in the Todoist sync setting you uncheck the synced lists, they remain in the app (sure) and keep syncing changes with Todoist (not good).

2. Deleting a synced list, deletes all tasks in Todoist. Not good! Probably unlink the list first before the delete operations are done.

3. Initial sync seems fairly slow. Not a huge deal, but it took ~2 minutes to get ~100 tasks synced across 7 projects. It also doesn't seem to go at a regular pace, with some time where nothing happens and then suddenly a moment where the tasks of one project are rapidly pulled.

4. Synced lists take a few seconds to show up in the app every time you start it up.

Dus to the combination of 1 and 2 I currently find myself unable to unlink some of my lists without that deleting all tasks in Todoist.