Todo list program
Usage : todo [show,add,remove,check,set]
todo use the file named ".todo.txt" in the current dir. So you can use many todo-list, one per directory. They have no ID system. For select a task, just type it or a part of it. You can add priority for each task "todo add priority task" or "todo set priority task-part" To check a task type "todo check todo-part"
If many tasks contains the todo-part, all of it will be selected.
