Make the ". " separator after the alias configurable

[davesmith00000]

Would be nice to be able to say:

a > thing b. thing c - thing

etc.

[reibitto]

That's a good point. I think I can add that. I was also thinking about having "sub-commands" where you can indent like:

a. task1
b. task2
  - subtask2
c. task3

I'll see if I can wrap all that together.