alphagov/trade-tariff-backend — pull request #154 by macool (2014-04-11 00:11:02+00:00)
Title: add `Rollback` model

these fields are added to `Rollback` in [this PR](https://github.com/alphagov/trade-tariff-admin/pull/24)
[pivotal story](https://www.pivotaltracker.com/n/projects/488191/stories/64898846)