old_contents: from sqlalchemy import MetaData, Table, Boolean, Column
  
  from sqlalchemy import Integer
  
  
  def upgrade(migrate_engine):
      meta = MetaData(bind=migrate_engine)
  
      message_table = Table('message', meta, autoload=True)
      col = Column('include_footer', Boolean, nullable=False, default=True,
                   server_default="true")
      col.create(message_table)
  
new_contents: from sqlalchemy import MetaData, Table, Boolean, Column
  
  from sqlalchemy import Integer
  
  
  def upgrade(migrate_engine):
      meta = MetaData(bind=migrate_engine)
  
      message_table = Table('message', meta, autoload=True)
      col = Column('include_footer', Boolean, nullable=False, default=True,
                   server_default="1")
      col.create(message_table)
  
subject: Fix default boolean value in migration script for MySQL (Fixes #hhucn/adhocracy.hhu_theme#250)