We should change have a way to check if board size is square. At the moment a non square board would raise such:
File "/openstudyroom/league/models.py", line 521, in parse
prop = utils.parse_sgf_string(self.sgf_text)
File "/openstudyroom/league/utils.py", line 175, in parse_sgf_string
out['board_size'] = int(out['board_size'])
ValueError: invalid literal for int() with base 10: '19:9'
We should change have a way to check if board size is square. At the moment a non square board would raise such: