http://tech.groups.yahoo.com/group/todotxt/message/2296
http://github.com/FND/todo.txt-cli/raw/extensions/schedule
http://github.com/FND/todo.txt-cli/raw/extensions/futureTasks

https://raw.githubusercontent.com/paulroub/todo.txt-recurring-tasks/refs/heads/master/recur
https://raw.githubusercontent.com/rscircus/todotxt-study-suite/master/.todo.actions.d/addr
