* copy _annotate_box_groups into tools, add test (doesn't pass)

* only if center + fix the probs + add test

* lol don't assert 1 == 0

* version

* no need for rows

* default to False in line w/ OG behavior

* rm junk enumeration

* pad_x optional

* moved test fixtures, added test for current .annotate of box_groups which does not use the new code

* change Document to use new stuffs, still passes test!

* delete the now moved and changed code

* remove print

* docstring on test