Doesn't follow todotxt file guidelines for completed tasks

[JW]

Per the todotxt format spec: https://github.com/ginatrapani/todo.txt-cli/wiki/The-Todo.txt-Format

Rule 2: The date of completion appears directly after the x, separated by a space.

For example:

x 2011-03-02 2011-03-01 Review Tim's pull request +TodoTxtTouch @github

With the completed date (required), if you’ve used the prepended date (optional), you can calculate how many days it took to complete a task.

DoStuff doesn't add the date so if the user makes use of CLI plugins or other todotxt tools that calculate metrics based on that creation date, the other tools fail.

[ximilian (ximilian)]

You're right. I am working on a new version and I will fix this in this new release.