No fancy install yet, so just clone the repo and add an alias to your shell's config file:
alias todo='/path/to/this/repo/todo.py'
$ todo add demonstrate the app
Tasks are saved in a todos.txt
file inside the repo location.
$ todo
1 - demonstrate the app
$ todo do 1
$ todo
1 - d̶e̶m̶o̶n̶s̶t̶r̶a̶t̶e̶ ̶t̶h̶e̶ ̶a̶p̶p̶
$ todo undo 1
$ todo
1 - demonstrate the app
$ todo delete 1
$ todo