def is_current?
      ::Sequel.extension(:migration)
      ::Sequel::Migrator.is_current?(database, migration_directory)
    rescue => e
      raise ConnectionFailed, e
    end
def is_current?
      ::Sequel.extension(:migration)
      ::Sequel::Migrator.is_current?(database, migration_directory)
    rescue => e
      raise ConnectionFailed, e
    end
Public: The scema version of the app's database

 Returns a String with the version number