str index out of range for wrap_text_to_lines

[makermelissa]

I'm getting IndexError: str index out of range on wrapping strings with:

from adafruit_display_text import wrap_text_to_lines
print(wrap_text_to_lines("Hello World!", 5))

[makermelissa]

Also, this chops it up weird.

print(wrap_text_to_lines("Hello4 World!", 5))

results in

Hell-
Worl-
d!

[makermelissa]

For "Hello World", here's the pieces it is chopped into:

['', 'Worl-', 'd!']