for those looking for another open source task tracker, taskwarrior[1] is a good cli option. You can use VIT[2], curses-based front-end to taskwarrior. I don't use VIT, but taskwarrior integrates nicely with vimwiki using taskwiki[3].

[1] https://taskwarrior.org/ [2] https://github.com/scottkosty/vit [3] https://github.com/tools-life/taskwiki