Better Fancy Formatting and Printing with Python

A while back, I came up with a great way to print fancy boxed and wrapped text to the screen (see the old post) in a way that was easy to use in other scripts, and which allowed the justification of the text. I've reworked the code since then, revisiting my random libraries as I do, and came up with a much better implementation. It more-or-less works the same as the old one, but now returns the string for printing, and some of the arguments are slightly different.

For example, the following code:

print formatText('Wow, this sure is a lot of text.\nQuite a bit of text, actually.\nWhy would anyone have this much text to output?', mode="box", width = 20, justify='center')

...produces this output:

====================
=  Wow, this sure  =
=   is a lot of    =
=  text. Quite a   =
=   bit of text,   =
=  actually. Why   =
=   would anyone   =
=  have this much  =
= text to output?  =
====================

Here's the code from GitHub: