Proposals for a todo command line application that does topological sorting.

dagsort.py

"""
$ issue create  # checks TODO.txt in current or ancestor directory
(B) My issue #1 +Project
1
$ # Syntax from https://github.com/todotxt/todo.txt
$ issue create
(A) Done after:#1
2
$ issue work 1
$ issue close 1
$ issue list
(A) Done after:#1
"""

# Implement a collections.abc.MutableSequence
class todopq:
    def __init__():
        pass
    def create(description, creation_date=None, done_date=None, priority=None, done=False):
        """
        Undestand "+Milestone", "@Tag" and "key:value". Use PyParsing.
        """
        pass