arnold fails to create migration table in MySQL with InnoDB + utf8mb4

[tuukkamustonen]

See: https://bitbucket.org/ollyc/yoyo/issues/14/mysql-with-innodb-utf8mb4-causes-problems

I didn't actually test it, but looking at source code, it seems like arnold would suffer from the same issue, because table is created using model.create_table() and migration column is specified with max_length=255?

[cam-stitt]

Thanks, would you mind running a test to see if it does in fact fail?