Todo program

Simple TODO program in cmdline.

$todo -h
Usage: todo [options]

    -a, --all                        Show all tasks (complete tasks)
    -u, --update task_num,level      Update task using id
    -n, --new task,level             Adding a task to todo
    -d, --del task                   Delete a task

It will create and update ~/.todo.yaml file:

---
faire les courses: 1
faire le menage: 42
manger: 10
trouver du taf: 70