PRIMARY KEY in transition table preventing state from having more than 1 transitions

[dobomode]

https://github.com/michelp/sqlfsm/blob/dec3f2b167e30648191f8b8bb6edd1b52c1a8465/sqlfsm--0.0.1.sql#L9

Due to PRIMARY KEY defined in transition table, a state can only have 1 associated transition associated.