Issue

Right now we don't run migrations on CI, so we don't validate if migrations work or even exist. Let's be honest they are not handled properly right now.

Solution

I suggest removing all existing migrations and generate first migration that will build the v0.15 database schema and do app/console do:mig:mig instead of app/console do:sc:cr on travis. Thanks to that we can validate that migrations work and there is nothing missing.

Enhancement

We can create sylius:migrate command which will run all migrations from /vendor/sylius/sylius/app/migrations/ to ease Sylius update on existing projects (e.g. using Sylius-Standard).