OLTW Dixon unused parts

[sildater]

matchmaker/matchmaker/dp/oltw_dixon.py

Line 109 in d5c58d7

def init_matrix(self):

it seems this initialization is never used.

another unused thing is Direction.BOTH it seems that select_new_direction only picks the other two. If the sequences match nicely, for instance for twice the same test sequence, the matches are doubled because every diagonal move is first a move in ref then in input direction, resulting in paths like this:

 [[0 1 2 3 3 4 4 5 5 6 6 7 7 8 8]
 [0 1 2 3 3 4 4 5 5 6 6 7 7 8 8]]