fix: migration triggers model callbacks using fields not yet migrated
== 20171221153738 ChangeClientStateToAcceptance: migrating ====================
-- add_column(:clients, :acceptance, :integer, {:default=>0})
-> 0.2025s
rake stderr: rake aborted!
StandardError: An error has occurred, this and all later migrations canceled:
can't write unknown attribute `resigned_at`
Edited by Kaspar Vollenweider