Log Message:
todoman: update to 3.4.0.

v3.4.0
------

* Add ``-r`` option to ``new`` to read description from ``stdin``.
* Add a dedicated zsh completion function.
* Lists matching is now case insensitive, unless there are multiple lists with
  colliding names, in which case those will be treated case-sensitive.
* Fix some tests that failed due to test dependency changes.